Brains is bored because, as Agent Brains, she currently has nothing to do; Fred and Friday suggest that she look for a new hobby, but Brains has already tried everything -- except tennis.

Friday finds an abandoned puppy, but Fred and Brains are the ones who fall in love with the puppy, paying more attention to him than to Friday; Friday suspects that the puppy is not as innocent and adorable as he seems.

The continuous bullying by Wally K causes Fred to propose a fight, convinced that Friday will provide special gloves to help him win.

Fred's parents are away so, to finally prove how cool he is, he plans to have a huge party and invite all of his classmates.

The Protectors have sent a specialist to Earth by mistake which results in the capture of Agent Brains, leaving Fred and Friday to rescue her and protect the city.

Fred had no intention of entering the school's science contest, but at the last minute he transforms Friday into a soda-dispensing machine and wins.