Substitute: Shale, a battle-scarred mercenary, finds that the war has moved closed to home when his girlfriend is attacked by a ruthless band of teenagers. Determined to root out this menace, Shale goes undercover at a local high school. Posing as a teacher, he and his team of mercenaries set a trap to catch the ringleaders in this explosive thriller.

Substitute 2: When a teacher is gunned down during a carjacking, his estranged brother, an ex-Green Beret turned mercenary, is determined to find his killer.

Substitute 3: A mercenary goes undercover to battle a university football team which is participating in an underworld of drugs and blackmail.

Substitute 4: When a clandestine gang of neo-Nazi students threatens an elite military school, undercover cop Karl Thomasson poses as a teacher and plunges into a deadly cat-and-mouse game of shifting alliances and murderous treachery in a one-man war to prevent an academic apocalypse.