Eric feels he must intervene when Martin, who recently moved in with the Camdens, is recruited by a professional baseball team, the Miami Gators and considers dropping out of school. Meanwhile, Ruthie enlists Lucy's help to convince their mom that she should be allowed to attend a couples party with Peter. Finally, Chandler's mother pays him an unwelcome visit when he is named executor of his father's estate. A rift happens between Lucy and Annie where an angered Lucy considers moving. Lastly, Cecilia teaches Sam and David on how to ride a bike.

Annie's half-sister Lily shows up on her doorstep to discuss an important family matter after Annie refused to contact her. Eric tries to figure out why Annie won't contact Lily. Meanwhile, Cecilia sets Martin's friend Mac up with a girl from school, but he doesn't want to go out with her because of something embarrassing that happened ten years ago; Ruthie and Peter put a bad spin on a school project that lands them in trouble when they create a newspaper featuring false and derogatory stories about two former US presidents. Lastly, Roxanne turns to Chandler when she finds herself faced with a moral dilemma as she is keeping a secret from Kevin regarding Detective Michaels.

Matt returns to Glenoak to celebrate a special anniversary with Ruthie and tries desperately to avoid seeing the rest of the family. However, when Lucy discovers the secret, she, Eric and Annie go crazy trying to figure out why he's in town. Meanwhile, Martin shares something special with Cecilia. Also, Annie lets it slip to Nurse Kelly that Matt and Sarah are married. Lastly, Vic invites Paris to spend a special evening with him, but she doesn't want to go because she thinks he might propose.

Lucy finds her husband Kevin and his partner Roxanne in a compromising position while on an undercover police assignment, Cecilia and Martin's relationship hits another bump in the road when their after-school commitments get in the way of one-on-one time, and Chandler may have bitten off more than he can chew as a new parent. Ruthie and Peter get stranded after missing their bus during a school field trip. However, fate intervenes when the youngsters cross paths with Lost Boys Nicodemus and Jacob, who not only take care of them until Reverend Camden arrives, but also share the heartbreaking story of their struggle to stay alive.

It's Camden chaos all around when Matt, who is having problems in his marriage to Sarah, returns to Glenoak for a visit and runs into his ex-girlfriend Heather on his flight to Glenoak. Simon unexpectedly announces he's coming home for the summer.

Also, Lucy sets out to discover why Roxanne is suddenly too busy to hang out with her as she's convinced that Roxanne is secretly trying to become a detective behind Kevin's back. Ruthie keeps a secret about a fellow student from her parents. Lastly, Martin learns that his baseball teammates think he's having sex with Cecilia.

The Camden chaos continues with Matt, who is trying to salvage his marriage, questioning whether he still has feelings for his ex-girlfriend Heather; Simon's return to Glenoak creates conflicted feelings for his ex-girlfriend Cecilia, who is torn between her feelings for Simon and her current boyfriend Martin; Ruthie's foreign exchange student friend Maria, appears to be making the moves on Ruthie's boyfriend Peter; and grandparents-to-be Eric and Annie hop a plane for New York, despite Mary's repeated pleas for her family to stay away.

Eric seeks help from Mary's (Jessica Biel, who does not appear in the episode) ex-boyfriend, Wilson (guest-star Andrew Keegan) after Charlie (guest-star Eric Panler), a new father, confesses to Eric that he has made a mistake and can't handle the responsibility of being a young dad. Meanwhile, Lucy and Kevin argue over which doctor they prefer, and Ben (guest-star Geoff Stults), who has taken an unusual interest in their pregnancy, only makes matters worse by siding with Lucy; and Ruthie has hidden intentions for wanting to hang out with Martin and his best friend Mac (guest-star Kyle Searles), which only leads to disappointment since Mac thinks of her more as a little sister.

When Kevin leads Venus (guest-star Martha Plimpton), a young woman, to believe that Martin is a rookie cop, she quickly expresses interest in him. Martin's friend Mac (guest-star Kyle Searles) encourages him to pursue Venus. Martin has a hard time revealing the truth after he learns that Venus' father is serving in the Middle East. Meanwhile, Eric and Annie are worried that Martin is getting in over his head with Venus and enlist Kevin to fix things, which only leads to rumors around the police station that Kevin is cheating on Lucy.

Mac also jumps in by spreading rumors about Martin at school. Lastly, Ben (guest-star Geoff Stults) continues to hide his relationship with Lucy's new baby doctor, even though they spend a weekend together.

With Thanksgiving just two weeks away, Eric and the kids notice that Annie is acting strangely, especially after she learns that Matt and Sarah (guest-star Sarah Danielle Madison) won't be able to spend the holidays in Glenoak. In fact, the majority of the family has made plans of their own and Eric worries how Annie will take the news. Mary (Jessica Biel does not appear in this episode) and Carlos (guest-star Carlos Ponce) decide to spend the holiday in Puerto Rico with Carlos' family and invite Ruthie to join them.

Meanwhile, Simon, who has something to tell his parents, but can't get up the nerve. Instead he decides to stay at school for work. Also, Martin has plans to go camping with Mac (guest-star Kyle Searles). Lastly, a strong-willed and pregnant Lucy is determined to do the cooking and decorating this year.

When a pregnant Lucy is put on bed rest following her recent hospital scare, an exhausted Camden family, especially her husband, Kevin suffers the consequences of Lucy's foul mood towards everyone. Lucy is also not able to go to her graduation ceremony and is having a hard time getting her paper done. Meanwhile, Ruthie's discovery of a disheartening e-mail on Martin's computer may explain his uncharacteristically bad behavior at home and school.

Martin is having a rough time on the baseball team lately with his foul mood toward his coach and teammates, including Mac (guest-star Kyle Searles). Lastly, guest-starring singing legend Wayne Newton shows up on the Camden's doorstep with a message for Martin from his father, who is serving in Iraq.

Lucy, upset that the family hasn't given her any gifts for the baby, convinces Matt to take her shopping even though she is supposed to be staying off her feet. While shopping, the two get stuck in an elevator and Lucy goes into labor, putting Matt's medical skills to the test. Meanwhile, Eric and Annie are busy getting the house ready for Lucy's surprise baby shower and become concerned when Matt doesn't have her back as planned. Kevin shows Ruthie that he bought a house for Lucy, and Ruthie mentions to Kevin that it will upset Lucy as he didnt consult her first.

In the end, Lucy has a healthy baby girl in which she names Savanah, after the location of Kevin and Lucy's honeymoon.

Ruthie is on cloud nine when an emotional Eric and Annie reluctantly agree to let her go on her first official date. However, Ruthie isn't surprised to find the family handling her big news with their usual crazy Camden ways: Annie and Lucy decide it's their job to help Ruthie prepare for her date with Vincent (guest star Thomas Dekker); Kevin takes it upon himself to give Ruthie ""the talk""; Sam and David change into their Sunday best so they can go on the date as well; an overprotective Martin and Mac (guest star Kyle Searles) decide to spy on Ruthie and Vincent's date; and Matt volunteers to play chaperone, but finds himself in a web of lies to protect Ruthie's feelings.

The streets of Glenoak are alive with the sound of music as the Camden family breaks into song for a very special Valentine's Day musical episode. Classic songs (""Love Is Sweeping the Country,"" ""You Were Meant For Me,"" ""Nice Work If You Can Get It,"" among others) are performed by the Camdens.

Simon is enjoying having his new girlfriend, Anna, who he just met the day before over at his apartment for Valentine's Day. They both agree to go to Glen Oak, but he decides to keep her away from his family for the time being. Annie displays her unhappiness to Simon in song (along with the rest of passerbys) over his constant dating habits at the promenade as the chorus is going on. Anna overhears this and begins to question Simon and his dating habits as well. Vincent confronts an unhappy Ruthie on the high school bleachers as she's not in the Valentine's Day mood and is upset over watching Martin practice with his team and Zoe blowing kisses at him.

Also, Lucy and Kevin dance to ""You Were Meant

Although he practices safe sex, Simon panics when his girlfriend of the moment, Sandra (guest-star Olivia Allen), confesses to him that she has an STD. Meanwhile, Martin and Mac (guest-star Kyle Searles) catch Ruthie's boyfriend, Vincent (guest-star Thomas Dekker), on a date with another girl. Also, Matt, Lucy, Kevin and Ruthie have second thoughts about telling Eric and Annie that Mary (Jessica Biel, who does not appear in the episode) is pregnant again, but also to hide the fact that she has deserted her husband Carlos and her baby son Charles. Lastly, Annie decides to go to New York to pay Mary a visit.

Annie and Ruthie spend the day together to unwind, while Lucy's world becomes complicated by both professional and personal news, and Eric unintentionally shakes up things between Rose and Simon.

Ruthie is informed of her father's health prognosis when her parents show up in Scotland, but she shocks them by reacting with very little sympathy or understanding. Sandy calls off her marriage plans with Martin after his best friend questions why they are in such a rush. Back at home, Lucy steps up as a much-needed source of stability for her younger siblings, as well as T-Bone, who needs help making a dramatic decision.

Eric, Annie and Ruthie are on their way home from Scotland, but they are held for questioning at the airport after Ruthie makes an unusual comment. Elsewhere, as a favor to Martin, Mac seeks information about Sandy's feelings for Simon. Lucy does her best to stay strong for the whole family as the truth about her father's health condition comes out.

Eric and Lucy tell everyone that they're going out of town on "offical church business," which isn't exactly true, while Annie and Kevin seek the truth about their spouses' little white lies. Meanwhile, Sandy takes over Lucy's teen class for the day, and Ruthie will do anything to prove that she is not a little girl anymore.

Ruthie insists that T-Bone get his driver's license so they can go away for privacy; unfortunately, T-Bone makes the mistake of asking Kevin to help him get ready for the test. Lou informs a stunned Eric that the church deacons feel he and Lucy are no longer appealing to the younger church members, so it is suggested that Sandy deliver the next sermon. Mac gets a job at the movie theater so he can afford an apartment with Jane and Margaret.

Sandy starts falling for a handsome doctor, and Martin may not be able to handle it. Elsewhere, T-Bone and Ruthie want to do something romantic for Valentine's Day, and they profess their love for each other in an unusual way. The Colonel and Ruth drop by unexpectedly, prompting Lucy and Kevin to leave town, and Eric fears that his parents know about his health problems.

Ruthie tries to hide her tattoo from her parents, not realizing that they already know something's up with her. Lucy knows about the tattoo, but she has a very specific reason for keeping it to herself. As it turns out, most of the Camdens have dirty little secrets that they'd rather not reveal...

When small things happen, some Camdens see them as signs. Lucy and Eric both cross paths with a black bird. They both come to the conclusion that this is a sign, and a bad one at that. Meanwhile, Ruthie gets a sign on her own. When she loses a diamond in the ring that T-Bone gave her as a promise to get engaged someday, she thinks that this is her sign that maybe being with T-Bone is not the best choice.

When Lucy gets an unexpected job offer in a small town known as Crossroads, she and Kevin take a trip out there to see if they might consider making the move. Back in Glenoak, Ruthie learns that removing her tattoo will not be an inexpensive procedure, and after getting no sympathy from her parents, she tries guilting T-Bone into paying the bill.

Ruthie gets a text message from what she thinks is T-Bone breaking up with her. But the truth behind the matter is a bit different. Meanwhile, Lucy and Kevin try to decide whether or not they will relocate to Crossroads.

With plans for another child, Lucy tells Kevin that it might not be a good idea to move so far away from the rest of the family. T-Bone confides to Eric that he's having second thoughts about breaking up with Ruthie, who is spending all of her free time lately with her former crush, Martin. Sandy's boyfriend surprises her with a marriage proposal, and T-Bone's estranged father shows up on the Camdens' doorstep.

Annie rushes her husband to the hospital when he wakes up with a certain hunch about his heart condition. The kids are a bundle of nerves--especially Lucy--since they don't know whether the news is good or bad. While sitting around in the waiting room, Ruthie and T-Bone decide to get back together, but an unexpected twist of events brings back unresolved issues with the guy who broke Ruthie's heart a year ago.

The Colonel sends Eric and Annie a gift--an RV--prompting Eric to talk Annie into taking the family on a trip to see America, and the list of traveling companions grows by the minute. In the middle of the happy madness, Lucy and Kevin make an announcement.