Mr. Belvedere takes a job as a housekeeper with an American family headed by George Owens.
The ad that Marsha has placed seeking a housekeeper is answered by Mr. Belvedere who finds himself needing to adjust to suburban life as well as the Owens needing to adjust to having Mr. Belvedere around. Meanwhile, Wesley's hamster has gotten loose somewhere in the house, Heather's boyfriend is pressuring her into a more serious relationship and Kevin brings home a bad report card.
When Wesley and three other classmates are not invited to a fellow classmates party, Mr. Belvedere suggests that he throw a party of his own. However, during his party Wesley gets a belated invitation and walks out on his guests and then is ridden with guilt later.
George is all excited about Wesley joining the football team and goes all out to encourage him. However, little does he know, Wesley has really taken up ballet and the entire family is trying to keep it a secret from him.
George takes Mr. Belvedere and Wesley to a wrestling match where a spectator Max 'Meat Grinder' Maxwell (Hard Boiled Haggerty) picks a fight with George, which ends with Mr. Belvedere defending George. Dealing with a bruised ego, George becomes impotent and wanting to feel like a man, he buys a motorcycle. Meanwhile, taking a cue from Mr. Belvedere, Wesley begins to get in fights at school.
Kevin tries to win the affections of a girl by suddenly becoming interested in some of the causes that she believes in like animal rights. This leads to Kevin landing in jail after he spray paints a mink coat. Meanwhile, George is the host of a call-in sports radio show.
When George and Marsha take a vacation to Florida they leave Mr. Belvedere in charge of Kevin, a grounded Heather and Wesley. Immediatly after they leave, all hell breaks loose, when Heather sneaks out with her friends to see a Prince concert and Wesley brings a massage therapist over for a stressed out Belvedere.
Heather and Wesley are collecting canned items to take to a food drive and while there they run across a bag lady and decide to bring her home. Meanwhile, Kevin's sculpture class is giving him a pain, he's trying to sculpt the head of Prince Charles with no luck.
