The Substitute: Failure Is Not an Option

Former mercenary Karl Thomasson returns once again as a substitute teacher, this time to infiltrate a military school's faculty to cease the actions of white supremacists.
A former mercenary joins a military academy as a teacher. He soon discovers a neo-Nazi group, code-named Werewolves, formed among the cadets. He also quickly finds that they have military leadership among the officers at the Academy.