Rui, who had just fulfilled her dream of working as a bus guide for a month, is assigned to accompany a company retreat for a small firm. Inside the bus, an unsettling atmosphere builds as the male employees, led by the company president, leer at her with hungry, invasive stares. Trembling with fear, Rui is suddenly confronted when the president stands up and declares, "Alright, the long-awaited gang rape time has arrived!!" Horrified by his words, Rui is utterly powerless against the depraved men who proceed to brutally rape her. She soon realizes she's been set up as part of a corporate conspiracy. With no means of escape, the tragic rape-filled company retreat plunges into even deeper depravity.