Hanson goes undercover to find a student who is blowing up toilets. Meanwhile, Fuller must convince the higher-ups that the Jump Street program, which is scheduled to be deactivated over the summer, should be reactivated in the fall, and Doug decides it's time to grow up.

Penhall and Booker join a high school football team in attempt to prove that the coach's negligence led to the paralyzing injury of one of the players.

Dorothy and Penhall split up forcing Penhall to move in with Ioki. Hoffs becomes involved with a city inspector, who is auditing Jump Street's records.