Stan, a troubled teenager, lives with his abusive grandfather after the tragic death of his parents. Struggling to survive high school bullies and a harsh home life, Stan finds solace in his friendship with Roxy and his best friend, Dommer. One morning, Stan discovers a horrifying secret: a bloodthirsty creature is hiding in the family's dilapidated shed. Initially, he tries to handle the situation on his own by keeping it locked up and resorting to desperate measures to contain the beast. Fear and curiosity battle within him as he contemplates the creature’s origin and potential dangers.

As tensions escalate with the bullies and his grandfather's behavior worsens, Dommer learns about the creature in the shed. Seeing an opportunity for revenge against their tormentors, Dommer pushes Stan to use the monster for their benefit. Stan is torn between his growing horror at the situation and the promise of an end to their suffering at school. Significant events take place, leading to a series of tragic and violent confrontations that force Stan to make difficult choices about morality, friendship, and survival. The story builds toward an intense climax as Stan faces the consequences of allowing darkness into his life.