Hanson becomes an inmate in a juvenile detention hall in order to investigate the murder of one of the inmates.

Booker is laiden with guilt when after he infiltrates a gang of drug users that kill one of their own whom they suspect is an undercover cop.

Hanson finds himself on the wrong side of the law after he decides to seek revenge on members of a street gang who shot and seriously wounded Ioki.

A popular sports writer finds his whole life ruined when Penhall believes his ex-wife's allegations of his being a child molester.

Hanson finds himself on the wrong side of the law after he decides to seek revenge on members of a street gang who shot and seriously wounded Ioki.

Hanson and Ioki must endure hell week as fraternity pledges in order to gain the confidence and get evidence on a gang rape which occurred at a frat party.

Booker goes undercover as a radio DJ to discover who killed a controversial college radio personality by planting a bomb in his car.

Hanson is assigned Booker as his new partner and the two don't hit it off as Booker's racist attitudes lead Hanson to believe that Booker raped a black student.

While working undercover in a Vietnamese streetgang, Ioki learns of a communist businessman who may be able to help his grandmother who is still in Vietnam.

Penhall's encounter with a bully while undercover causes the members of the Jump Street unit to reminisce about their dealings with bullies while they were in school.

An old Army buddy comes to Fuller seeking the Jump Street unit's help in bringing in an AWOL soldier who will be classified a deserter if he doesn't return to base within two days.

Fuller and the Jump Street unit are given a lot of flak and told to pull off the case when city hall learns Hanson and Penhall are about to bust the mayor's son on drug dealing charges.

Undercover looking for a person who has been preying on homeless teens, the Jump Street cops learn what it is really like to live on the street.

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.

The Jump Street cops enroll in a performing arts school to bust a drug ring being run there.

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.

Hanson goes after an old friend who wrote an article exposing the Jump Street program causing Hanson to get suspended from duty.

Hoffs goes undercover as a pregnant teen to investigate threats of violence being made to a family planning center by anti-abortionists.

Hoffs and Ioki go undercover in a Guardian Angel-type street patrol whose members have a vendetta out for a drug dealer who Hanson is trying to set up for a bust.

Everyone in the Jump Street unit gets blue flu when the police force goes on strike forcing Captain Fuller to team up with a rookie cadet.