Hanson and Penhall investigate a series of vandalizations.

Hoffs and Ioki investigate a modeling school following allegations that it is a front for a pornography company that exploits minors.

Penhall and Hoffs go undercover to protect a student that is in the federal witness protection program.

Hanson investigates a beating that is suspected to be the result of a loan shark operation while Penhall takes care of his neighbor's baby.

Hanson and Penhall go undercover to investigate drug dealers. Hanson is approached by a student requesting that he assassinate her father.

Hanson and Penhall investigate the disappearance of a couple of teens who may have witnessed a robbery, while Hoffs and Ioki investigate a student who is rumored to be prostituting.

After a teacher's car is pipe-bombed Hanson and Hoffs go undercover to prevent an escalation of gang violence. Once there, however, they wind up in a hostage situation initiated by a Blood leader.

Hoffs goes undercover at an all girls' school to investigate a series of fires set by an arsonist.

Hanson and Penhall investigate the possible rape and death of a student.

Hanson investigates a series of breaking and entering incidents.

Hanson investigates a car theft ring while Hoffs keeps an eye on a foreign exchange student from Poland.

Hanson's first undercover job with the 21 Jump Street crowd. A high school student owes money to a violent drug dealer.

As part of a new police initiative a young looking police officer, Hanson, is sent into a high school undercover to investigate a dangerous drug dealer.