A mob boss discovers that a large sum of money has been stolen from his organization and orders a violent crew to find the thief and recover the cash. Their investigation leads them to a suburban home where a family has just relocated. Within this home is a troubled teenager, Owen, who exhibits severe aggression and behavioral issues, and his stepsister Lauren, who is trying to adjust to her new life. Unbeknownst to his family or the assailants, Owen harbors dark secrets, including an exceptional talent for violence and strategic thinking.

The criminals invade the family's home, assuming an easy recovery of the stolen money, but they encounter more resistance than anticipated. Owen's sinister skills and meticulous preparations turn the house into a deadly battleground. Using traps and guerrilla tactics, Owen defends his family, transforming their ordeal into a relentless game of survival. The invaders soon realize they have underestimated their young opponent, facing dire consequences as they pursue their mission in what becomes a nightmarish scenario for both sides.