Detention is the least of their problems. For five high school outcasts, a Tuesday afternoon turns into a fight for survival when a mysterious lockdown traps them inside their empty school. Outside, soldiers in hazmat suits enforce a strict quarantine, and a chilling silence falls over their small mountain town.They soon discover the terrifying truth behind the lockdown: an intelligent, unstoppable substance has escaped from the secretive lab on the hill, and it's consuming everything in its path. Forgotten by the authorities and hunted by both the military and the creature itself, these five strangers are the only ones who know what's truly happening.With time running out and the threat evolving into something beyond their worst nightmares, they must unite to uncover a secret that could save everyone or be the last thing they ever learn. In a town being eaten alive, their only hope is each other.