Mercenary Shale's team is retired after a (not so) covert mission in Cuba. He becomes substitute teacher at his teacher fiancee's Miami high school to get those behind kneecapping her. His team helps him.

A mercenary masquerades as a teacher in order to enter a tough urban school and wreak his revenge upon his brother's killer.

At a college visit to a war buddy's professor daughter, mercenary Karl Thomasson finds her brutally beaten. He then poses as a teacher to teach a lesson, and get revenge, on the brash football jocks responsible.