Its final exam time and Mike and his girlfriend Jean have thought up a test of their own - to try the strength of their affection by not seeing each other the week before school has its graduation ceremonies.
Mike prepares for the transition from high school to college and the question of joining a fraternity is one that complicates his life considerably. When Mike and Jean attend a party as prospective applicants, he later finds out the they have been dropped from the waiting list and suddenly the cold war turns pretty hot.
Robbie wants to date a cute fifteen year old blonde, whose mother campaigns for Steve's co-operation to end the relationship, but this move almost ends in another romance. Robbie starts shaving and Steve realises Robbie is becoming a man.
Mr. Pearson's idea of a quiet drive in the country with his wife is altered by a station-wagon load of Douglases. Meanwhile Robbie is trying to avoid the clutches of a girl named Mary Lou.
On a dark night when Steve is away, Robbie and his date are frightened by a man in a trench coat. It all happens when Robbie is seen putting on the hubcap of his next door neighbour. Steve isn't too concerned when he hears about the incident as he thinks it all stems from Robbie's steady diet of spy and mystery stories.