Peter Allows Meg to go to a party with her new friend. This angers Lois because its the same day as Stewie's birthday. What Meg doesn't know is that she's actually attending a cult meeting. Peter comes to pick up Meg, when the Cult Leader follows. Stewie believes him to be the "Man in White", trying to return him to the womb.

Peter's very religious father comes to live with the family after he is forced to retire from his lifelong job at the Mill.

Christmas comes to Quahog! While Lois attempt to make the holidays perfect for the Griffin family, Peter messes it up. Meanwhile, Stewie learns of Santa Claus’ ability to keep 24-hour surveillance on all the world’s children.

When Peter’s dad comes to visit, he tries to impose his religious beliefs on the family. But after a mix-up with the holy-water leaves Stewie in a bubble, Peter decides to form a church worshiping his hero, the Fonz.

After Peters dad, Francis, dies, Thelma tells him that his real father actually lives in Ireland. So Peter and Brian decide to head there in search of his father, who ends up being the town drunk. They decide to play a drinking game to prove his paternity. Meanwhile, Stewie acts out and Lois spanks him. Realizing that he likes being spanked, Stewie does whatever he can to get into trouble.

Peter and Lois's marriage hits a bit of a snag. When Brian wins the New England Rising Writer's award, the three of them head to Martha's Vineyard for a nice relaxing vacation. Peter's usual drinking habits take over, and he soon spirals out of control, as does Brian's self restraint, as he soon professes his love for Lois. Peter and Brian test their friendship over the woman of their dreams.

Meg becomes extremely religious, and tries to convert Brian from Atheism. Meanwhile, after the family visits a Star Trek convention, Stewie kidnaps the entire cast of Star Trek: The Next Generation and forces them to hang out with him.

Lois agrees to become a surrogate mother but the couple of the child she's carrying dies and she's forced to make a decision whether or not to terminate the pregnancy.

When Lois discovers that Stewie's sick playmate is being denied medical treatment because his parents are Christian Scientists, she decides to take matters into her own hands.

Peter tries to keep up with Lois as she goes through a midlife crisis; Stewie brings home a turtle from the park.

Meg has fun partying with Peter when he takes her to a college for an interview. Brian must learn how to live in the wild when he gets sprayed by a skunk and is prohibited from entering the house.

For Father’s Day, the guys track down Joe’s estranged father. But when Joe explains that his dad is intolerant of people with disabilities, Peter steps in and pretends to be Joe. Meanwhile, Stewie’s doctor tells him that he’ll only grow to be 5’1”, so he hangs out with Tiny Tom Cruise to understand what it’s like to be short.

Brian falls in love with a tech support worker in India, so he and Stewie travel there to find her. Meanwhile, Joe invites Peter to his bingo night, but when Peter becomes the new center of attention, Lois helps Joe reclaim the group.

Peter gets jealous of Lois when she upstages him at a Red Sox fantasy baseball camp. Meanwhile, Stewie runs away from home when Meg is left to babysit him

In this special holiday episode, a selfish Peter loses his Christmas spirit and is visited by ghosts of Christmas past, present and future who take him on a journey around Quahog in the style of Charles Dickens' "A Christmas Carol".

When Lois' piano student, Alana, comes to work for the Griffins, Lois is initially glad for the help, until she realizes Alana's intentions are more sinister than she thought.

Peter is emasculated when, on their anniversary, he abandons Lois amidst a shark attack. Meanwhile, Stewie finds a mini fridge and lives the dorm lifestyle.