While observing a family suspected of operating a burglary ring, Hoffs begins to suspect that a boy is being abused.

Hanson and Penhall investigate the murder of a high school teacher's wife and discover that the teacher hired one of his students to kill her.

Hanson tries to convince a juvenile inmate on death row to appear in a film intended to keep his peers out of prison.

Hanson is unable to keep his mind on the investigation of a shooting of a teacher at an inner city school when he learns that his mother is moving in with her boyfriend.

Penhall and Ioki become rent a cops while Hanson becomes a member of a clique of thrill seeking kids who break into houses to annoy the rent a cops.

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

The Jump Street team intervenes when a tough new principal goes too far in his attempts to clean up a drug and crime infested inner city school.

Hanson gets assigned to the Jump Street unit, a special division of the police force which uses young cops to go undercover and stop juvenile crime. His first case involves catching drug dealers.

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 Penhall infiltrate an exclusive preppie clique to investigate a prank that left a girl dead.

Ioki faces being dismissed from the force when internal affairs discovers that he is a Vietnamese refuge who is using an alias. Flashback sequences show his escape from Saigon.

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.

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.

Hanson and Penhall find the military code of honor hampering their undercover investigation of a military academy where the cadets are suspected of killing homosexuals.

A handicapped policewoman asks Fuller to send her undercover to investigate a series of attacks on handicapped women; however, Fuller also send in Hoffs in a wheelchair.

Doug falls for a narcotics officer with questionable tactics and a possible drug problem herself.

Hanson gets assigned to the Jump Street unit, a special division of the police force which uses young cops to go undercover and stop juvenile crime. His first case involves catching drug dealers.

Hanson meets an old flame now married to the owner of a 80's nightclub suspected of providing LSD to high school students.

Hanson and Hoffs go undercover in order to put a crack ring out of business. Penhall, working on the same case, returns to squad car and becomes convinced that his new partner killed a drug pusher.

After discovering that some white officers are responsible for beating and harassing black teenagers, Hoffs, with Fuller's help, try to convict them.

Hoffs, Hanson and Penhall find themselves at the mercy of a defiant gang when all of them become trapped inside a school with out power.

Penhall ends up taking his nephew back to America after he and Hanson travel to El Salvador in order to find Penhall's wife, whom they learn was killed in the fighting.

Hanson and a film star he had been assigned to protect are kidnapped by an escaped murderer.

Penhall & Hanson go undercover as the McQuaid brothers in a suburban high school, that recently has had inner city kids bused in, to investigate the theft of a Porsche. Meanwhile, Judy must deal with a love-sick teenage boy.

Jenko is killed by a drunk driver and is replaced by Captain Fuller who has his hands full dealing with a vengeful gang leader whom has taken his principal and several others hostage, including an undercover Hanson.

Hanson and Hoffs go undercover in order to put a crack ring out of business. Penhall, working on the same case, returns to squad car and becomes convinced that his new partner killed a drug pusher.

Hoffs and Mac investigate a car theft ring near a high school, and the prime suspect is a pupil of Hoffs.

The Jump Street unit is investigating a counterfeit drivers license ring when Captain Fuller gets arrested for drunk driving.

The daughter of a policeman who claims her father is sexually abusing her tries to hire Hanson—undercover with Penhall as one of the drug dealing McQuaid brothers—to kill her father.

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.

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.

Working on a tip from Booker, the Jump Street cops join a motorcycle caravan in order to bring Raymond Crane to justice. The crossover starts on Booker S01E08 Deals and Wheels (I).

The Jump Street cops each relate a different version (with the teller as the hero of a film from their favorite genre), to a reporter investigating the foiled attempt to kill a senator.

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

The suicide of a popular student, whom Hanson and Penhall had arrested the night before, leaves his family, fellow students and Hanson in a state of depression and forces Penhall to relive bitter childhood memories.

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.

Ioki is confronted by a teenage boy with a gun, who three years earlier Ioki had talked into turning in his drug abusing family.

In the 21st century a young cop hoping to revive the Jump Street program interviews the retired officers who were there when it all started.

Penhall joins the school baseball team in order to keep an eye on one of its star players, whose life has been threatened when his father agrees to testify against the mob.

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.

Doug has a strained reunion with his estranged younger brother Joey when Joey is assigned to the Jump St. team. Doug comes to his aid after Joey is brainwashed into joining a religious cult he was investigating.

Mac has to date a daughter of a reputed drug dealer in a confidential FBI case at the same time he is trying to rebuild a relantionship with an old flame.

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.

Hoffs and Garrett must deal with a DEA officer while working undercover at a massage parlor suspected of being a front for a drug operation.

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.

Past romances that didn't have happy endings are the subject of conversation at a Valentine Day Eve poker game.

McCann joins up to be the partner of a mentally handicapped youth in a school buddy system, to investigate the murder of the boy's former partner.

After volunteering to become a Little League coach Penhall learns that one of the players was kidnapped by his father, from his mother and step-father.

After finding the missing daughter of a famous reporter, Mac tries to solve the mistery behind the missing.

Hanson and Penhall find a way to get out of the cold while remaining on the job as they trail a suspected bomber to Florida during spring break.

Hoffs is not convinced that the captured suspect in an arson case at a Catholic girls school is the guilty party and believes that the real culprit will strike again at the school's prom.

Hanson goes undercover as a punk rocker in an effort to stop a feud between two rival gangs from turning into a war.

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.

Penhall gets caught up in the excitement as he and Hanson go undercover to bust a college gambling operation.

Doug and Joey enroll in a college where good students are mysteriously being turned into criminals.

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.

A lesbian student makes a pass at Hoffs when she and Capt. Fuller go undercover at a high school to learn the identity of a student who was a witness to a teacher's murder.

Donning their McQuaid brother aliases for one last time Hanson and Penhall discover a teenage girl who has kidnapped her baby sister to get her away from their abusive parents; while Penhall adjusts to becoming a father figure.

When the leader of a neo-Nazi group is murdered, Hoffs & Ioki go undercover in the liberal group suspected of the killing. While Penhall joins the Nazis to learn if they plan a violent reprisal.

Racial violence threatens to break out at an integrated school when word leaks out that a white student got a black student pregnant.

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.

When a small-town teacher refuses to teach the theory of evolution after his son has a near-death experience, Hanson infiltrates the school to try to discover who's behind the recent burning of the science books.