Hoffs and Garrett go undercover in a massage parlor believed to be the front for a drug ring, meanwhile they deal with a DEA officer.
Garrett starts dating the sister of a suspected high school drug ring leader.
While working undercover in a high school, Hoffs is suspended by Jump Street after failing a drug test. While Penhall investigates a drug ring at a high school, he becomes suspicious why a star basketball player refuses to take part in the schools anti-drug program.
Doug's younger brother Joey joins Jump Street. After being rejected by Doug he volunteers to go undercover in a cult and soon becomes brainwashed by their leader and a pretty girl who shows him love.
McCann investigates a murder of a high school football star and dates a cheerleader who has AIDS.
Doug's life enters limbo while doctors struggle to save him after being shot and makes life-altering career choices after talking with those he meets there.
Hoffs and Fuller investigate white police officers who are believed to be beating black teens.
Joey takes responsibility for a baby girl while trying to find her drug addicted mother.
Mac tries to solve the mystery of why a famous reporters daughter had been missing.
Mac enters a devil worship cult who's leader can lure boys to join them with her beauty.
Mac goes undercover as a football player after a schools star dies from a heart attack.
A group of high school extortionists has Hoffs, Mac and Fuller going in undercover to investigate.
Hoffs infiltrates a girl gang to find who is responsible for a murder of a teen she witnessed.
Hoffs and Mac investigate a car theft ring with the prime suspect being one of Hoffs students.