Tras robar dinero de un cartel sin saberlo, un profesor en aprietos económicos descubre que la única forma de salvar a su familia es trabajar como narcotraficante.

Mientras está muy borracho, un escritor de cómics sin éxito dibuja un cómic sobre su vida como antiguo sicario de la NIS, y se mete en problemas cuando se publica en Internet.

Chul-Soo (Hong Jong-Hyun) is the only son of a legendary thief family. He falls in love with Young-Hee (Jin Se-Yun) who is a police officer. Her family is also a police family. To get her parents permission to marry, Chul-Soo undertakes an exam to become a police officer, but both families work to prevent their marriage.

Based on the best-selling novel of the same name, this dramedy follows two psychiatric patients- one schizophrenic, the other sane and committed against his will - who forge a bond of friendship and hatch a plan to escape.