Horst, a loser, is an awkward loner and a target of bullying by his classmates. The mean-spirited Kevin makes a cruel bet with Debby; together with his two cronies, Tobias and Simon, he tries to ingratiate himself with Horst. Through an unfortunate twist of fate, Horst finds himself pursued by a ruthless monster intent on eliminating him at any cost. When he accidentally bumps into Lea—a girl from a parallel class—on his way home, his life takes an unexpected turn.
