Toysalesmen Wally beings home a gigantic stuffed gorilla that upsets Phillip because a professor friend of his is coming to visit. The Brady Girls learn how to defend themselves which helps them when a burglar visits.

Pandemonium results when Carol Brady temporarily moves in with her newly wedded daughters and their husbands. Carol Brady's first night in her daughters' house turns into a harrowing experience for everyone as sleeping arangements are stretched to the limit.

When the FBI comes to visit, Wally thinks they're after him for some overdue parking tickets. In reality, they came over to talk to Phillip about government funds he requested for school. Wally then impersonates Phillip to try to escape.

Phil tries to change his personality so he'll become more popular.

When Marcia's male models for a fashion show go on strike, she cons Wally and Phillip into taking their places.