In the series opener, unemployed Mark Cooper gets a job as a substitute teacher at his old high school. He also shares his house with two beautiful women: Robin, a music teacher who also works at the school, and Vanessa, a rich girl whom Mark is attracted to. On his first day of school, Mark has to deal with unruly students who give him a hard time. But Mark soon finds a solution to impress his class.

When Mark becomes a substitute teacher, he gets a handful. His class includes playful little Michelle Tanner. When Michelle and her friends begin to torment Mark, he does a trick to get them to be quiet- and ends up hurting his behind. Michelle feels very guilty and comes over to ""help him.""

In the beginning of the episode, Mark is fixing Tyler's bike. Tyler asks to have dinner with them but Mark says no. Tyler asks Vanessa and Robin and they say yes. They are celebrating their eight month anniversary of living together and being roomates. We go back in time when they moved in together. Mark and his friends are playing basketball outside and Vanessa and Robin takes their basketball. Mark gets a Spanish class at the high school. Mark tries to use the bathroom so he could get their earlier but Vanessa is doing her hair. Mark gets into the bathroom through another door. Robin, Mark, and Vanessa are having a hard time using the only bathroom. Mark goes to class late and meets the principal. The principal remembers Mark and gets a headache. Mark tries to read the lesson plan but he can't because it's in Spanish. Robin asks Mark to get home and sign for the new chairs arriving at home. Mark gets locked out of the class by Earvin. At home, Mark tries to get used to the new fu

Despite wanting to marry Mark, Vanessa innocently has lunch with her former boyfriend. When Mark finds out, he frantically proposes marriage to her. But Vanessa rejects him, thinking he only did it out of jealousy.

Vanessa is very tense from planning her wedding, so her friend Florence invites her to a spa for relaxation. Mark becomes jealous when he realizes that the spa is staffed by attractive men who are eager to please their customers.

Tyler makes a date with a girl for his first school dance, but Mark gives him bad advice on how to treat women.

When Mark argues with the high school's girls' basketball coach, they decide to settle their differences with a one-on-one basketball game.

To help the school earn money for textbooks, Mark works at a carnival pretending to be a fortuneteller.

Mark and Vanessa get into an argument, but they both have conflicting viewpoints as to what really happened.