Sunwoo lives in a town overflowing with trash due to an environmental workers' strike. Playing a road kill game with her friend Myung-ho, she makes Hee-sun's father, whom she had a crush on, die. After that, Hee-sun relies on Sun-woo, and the police conduct student interviews to gather information. Meanwhile, garbage accumulates in Sun-woo and Myung-ho's hideout, 'ghost apartment,' due to unauthorized dumping by residents. Sunwoo decides to turn herself in, but the next day, Myung-ho goes missing, leaving a suicide note. Searching for Myung-ho, Sunwoo heads to the Ghost Apartment.
