Trapped between his constantly fighting parents and a violent school environment, middle schooler Gi De-on barely survives exam seasons by purchasing Adderall. One day, he notices Eun-oh lingering around him, the very girl who delivers his pills. De-on discovers that Eun-oh and three other kids live in an abandoned building, spending their days packaging and delivering narcotics. De-on gets to join their illicit operation. For the first time, he feels a profound sense of belonging and the intoxicating thrill of breaking taboos. However, their fragile sanctuary soon begins to fracture.