The second son of a Mafia boss, Kinn Theerapanyakul, is fleeing from an enemy when he meets Porsche, an enterprising young bartender. Porsche agrees to help defend Kinn from his attackers for a price. Porsche's martial arts skills impress, and spurred on by his father, Kinn seeks to hire Porsche as one of his personal bodyguards. Porsche is opposed and rejects Kinn’s offer despite his attempts at intimidation. It isn't until Porsche's family home and his ability to care for his brother are threatened that he acquiesces and moves onto the Theerapanyakul property. It's not a smooth transition into the unorthodox, violent job, and his relationship with Kinn vacillates between strained and playful. When his feelings for Kinn take an unexpected turn, his work becomes even more high-stakes.

Eight school friends travel to a vacation house in the middle of a forest to bid farewell to Jin, one of their group who is going to study abroad. The trip allows them all to go back and reminisce over the memories of their high school days. However, a series of disturbing events cause tension and unrest in the gang, who begin to suspect there is a ninth person hiding somewhere in the house. When things take on a sinister turn, and they try to unravel the mystery, dark secrets from the past come back to haunt everyone. They realize that if they want to survive, they must quickly find out who is behind the deadly and bloody occurrences.