Bruce Barnes is a schoolteacher having yet another shit day. His students are a disrespectful nightmare, gleefully relishing the misery they put him through. But today is even worse than usual, and after a particularly grim run-in with a student, he heads to the break room to bum a smoke off another member of the faculty. After lighting up, he's told the cigarette is laced with amphetamines. From there, Bruce rides his "rage snake" from the classroom...