There's a hitch in the twins' school project on marriage when Willie goes after Mark's wife while David tries to best Sandy at anything.

The boys are all set for an evening of terror, watching a horror movie. However, when it's over each one of them is scared stiff and go on to experience their own version of ""Nightmare at Zombie High.""

David's advice to Mrs. Poole to vent her anger against her overbearing mother-in-law backfires when Mother Poole moves in with the Hogans.

College freshmen David, Rich and Burt have been feeling a little left out of the college social scene and decide to spark some attention by stealing a rival school's mascot, a wolverine, but when the fierce creature gets loose, it's every Hogan for himself. Meanwhile, Mark and Willie enroll Sandy in a computer dating service and she discovers this just as her date knocks on the front door.

A nervous Michael dives into the dating pool bu doesn't make much of a splash, while David will stop at nothing to avoid immersing himself in an English assignment.

David has a crisis of conscience when he's attracted to the coed that best friend Burt has his eye on, but he's caught off guard when Burt throws down the gauntlet.

David lights a fire under his brothers to get them to help sweep out the chimney, but Mark does a slow burn when he gets wedged inside the fireplace.

Mark worries that he and his two left feet will trip over the light fantastic when Willie tells a girl that Mark likes, that Mark is a great dancer.

Sandy tries to teach Willie a lesson about cigarettes, but her efforts go up in smoke when she returns to smoking herself.

Willie is stirred by first-hand accounts of apartheid from Sandy's South African professor, so he and Mark embark on an el-train ride to a candlelight vigil.

The Hogans take a trip to Paris and enjoy the sites and sounds. Meanwhile, David befriends an attractive woman, Julia, who unknowingly to him is a princess playing hooky from her royal duties. However, private investigators soon begin searching for her.

Paris, the City of Lights, has cast a romantic glow over David and Julia, however, Julia's day of playing hooky begins to slowly come to an end as the private investigators stake out the Hogan family. Sandy and Mrs. Poole quickly find themselves in trouble as they are chases through Paris by two men.

The private investigators catch up to Julia and whisk her away leaving David without an explanation or a goodbye. However, things turn around for the young couple as, Julia invites him and his family to a Parisian party fit for a princess.

Willie becomes obsessed with being number one on the track team and enlists David's help training him. However, Willie quickly finds that he doesn't have the will for training. Meanwhile, Sandy's ex-husband persuades her to dog-sit for a Cujo-like pooch who takes up permanent residence on the ankle of anyone who comes by.

Mark wrecks his confidence when he has an accident during his driver's test, while David drives him crazy getting it all on tape for a class project.

David is all excited about the Homecoming parade but is let down when he discovers that he will be sharing a camel costume with Burt. To make matters worse, during the parade, Burt causes a fall that lands the both of them in the hospital.

Mark gets a job at Bossy Burger and goes out of his way to get Willie a job there too. However, Willie's constant goofing off goes un-noticed by the boss, who promotes him, then finds himself in a bind during a rush. Meanwhile, Sandy's attempts to re-finish the floor in the living room hits a snag when Michael is called out of town, leaving her to turn to David.

When Sandy has to prepare for an upcoming presentation and Michael has to study for a flight test, David takes over the reins of the family and begins driving Michael and Sandy up the wall. Meanwhile, Mark finds himself battling a bully at Bossy Burger.

David might have to forget about his internship with a local TV station when Sandy, suffering from short-term memory loss, goes along for the interview.

Mark has been tutoring a new girl, Cara, whom he has a crush on. However, she doesn't know he's alive because she has a crush on Willie. When Willie, goes to Mark to help him win Cara, a reluctant Mark goes along. Meanwhile, David prepares for an upcoming talent show.