The first day back at school has barely begun when the police show up looking for a murder suspect. A botched robbery has gone down a few blocks away and the panicked assailant, wearing a Winslow High letterman's jacket, shot and killed a man before heading towards school grounds.

The police think the suspect is a student who is hiding on campus and demand to begin the search at once. Meanwhile, oblivious to the tense situation, Lisa and Buttle decide to have sex in the deserted boiler room. Unfortunately, Riley and an officer stumble upon the couple during the investigation and catch them in the act. Riley agrees to keep quiet about the affair for now, but urges Buttle to break it off before he loses his job…or worse.

As the hunt continues, it becomes a code red condition, locking both teachers and students in their classrooms. Eventually, Lauren realizes that a pupil in her class might be the suspect but before she can take action, the desperate student whips out his gun and takes La

Security tapes of the girls' shower room are missing... with footage of Lauren on them. Marla sends her entire class to the principal's office. Anthony's hit list is found. Lauren and Harry break up.

Scott fires an art teacher twice. Christine Banks dies of a heart attack after winning a wrestling match. Harry finds out Dana Poole has become a stripper. Marla insults janitors and she finds one of her student's father is a janitor.

Staff and students at Winslow High struggle to get on with their lives after a number of tragic events.