Rune is fifteen, impulsive, and he has been battling with schizophrenia for years. Fueled by sudden delusions, he gets into an explosive fight with his twin brother and runs away from home. His mental health continues to deteriorate as he is put through one intense challenge after another. Rune soon finds himself in a scary underground world, where he must kill to survive and where he is forced to question not only his own sanity, but also his own morality.