Carol breaks the news to Mike that she's expecting and an eavesdropping Bobby and Cindy assume that she's pregnant and pass it along to the rest of the family. Unknown to them what she meant was that she's expecting her nephew, Oliver to move in with them over the summer while his parents are in Africa.

Peter is stunned after he runs into a boy who looks exactly like him at school. His look alike comes in handy when Peter inadvertently makes two dates for the same night, one with Michelle and one that he forgot he promised with the niece of Mike's boss.

When an FBI agent makes a visit to check Mike's security clearance, Bobby and Oliver both become convinced that Mike is working on some plans for a top secret project. They later become suspicious of Sam and become convinced that he plans to steal the ""secret plans"" and pass them on to the Russians.

Marcia plants a bogus story in her diary to bait Cindy after she gets fed up with Cindy's nonstop snooping. The bait is a story about Marcia contacting a talent scout after submitting a picture of Cindy and the talent scout wants Cindy to be the next Shirley Temple.

The Brady family tries to figure out who would send them a pool table and later learn that Mike's boss, Mr. Matthews is the one. Meanwhile, Bobby becomes obsessed about the game and begins betting everyone including Mr. Matthews.

Bobby, wanting to get rich quick, begins selling bottles of hair tonic and sells a bottle to Greg. However, Bobby runs for his life after the tonic turns Greg's hair orange, just days before his high school graduation.