Class of 1999 II: The Substitute

John arrives as a substitute at a Bend, Oregon high school and confronts a group of punks. He uses martial arts to dispatch them, establishing his lethal reputation. The principal threatens to fire him, but John kills the principal by breaking his neck.

John chains the doors, trapping the troublemakers inside the school. He then throws a grenade into their car, blowing it up and ending the confrontation.

While eating in his car, John sees an advertisement for a military museum in Monroeville, California. The ad plants the seed for a possible past or mission, hinting at a journey toward Monroeville.

In Monroeville, Jenna McKenzie faces heat from administrators after witnessing gang leader Sanders pull a gun on a student. Sanders harasses her, while her boyfriend Emmett Grazer tries to protect her, which only fuels Jenna's frustration.

John arrives to teach his class at Kennedy High School and immediately confronts rebel student Tiller. Tiller drops a book; John hears gunfire in his head and sends him to the principal's office. Tiller goes to the roof to take a hit of the drug 'edge' and dies when John throws him off the roof.

The next day, Jenna goes out for a jog; Sanders and his goons harass her again, and John saves her. Sheriff Tom Yost notices John’s Special Forces tattoo and questions his background, but John walks away, keeping his past hidden.

Emmett runs a small military museum and plans a paintball competition between students. John shows interest in Emmett's gear but remains hesitant to reveal who he really is, keeping his identity guarded.

G.D. Ash reports on the Kennedy High School incidents from two years earlier, involving malfunctioning android instructors. John teaches Jenna military tactics and quotes, hinting at his knowledge while concealing his true nature.

To keep Jenna safe, John hunts down a member of Sanders' gang and uses martial arts before chaining him to a wall and setting him on fire. He enforces his own brutal justice, escalating the feud with the gang.

On the day of the paintball tournament, John wages war on everyone, targeting Emmett and Jenna. He kills several troublemaking students, and when Sanders confronts Jenna, John arrives to kill Sanders and his gang.

Jenna confronts John, who reveals he is a military android. G.D. Ash arrives and reveals that John is not an android, but the son of Dr. Bob Forrest; John explains his PTSD and belief in his android identity, aided by his armor. Ash is killed by John.

John and Jenna are trapped in Emmett's bunker as John plans to blow them up. Emmett sacrifices himself to save them, John shoots Emmett, and then Jenna shoots John in the head, sending him tumbling into the bunker as it explodes.

Two days later, Jenna prepares for school and talks with Emmett on the phone. She reveals she now wears body armor thanks to the armor Emmett kept in the museum, hinting at a new readiness for battle and quoting John’s line about preparation.