Released after being wrongfully convicted and imprisoned for 13 years, a woman begins executing her elaborate plan of retribution.

Young-goon, mentally deranged and frequently electro-charging herself with a transistor radio, has been admitted into a mental institution. Firmly believing herself to be a cyborg, she refuses to consume like a human being. Il-soon is another patient, who catches the eye of Young-goon and soon becomes a close friend. Il-soon is now confronted with the biggest task: to cure Young-goon's mental problem and have her eat real food.

Sung-soo has everything a man could want: a beautiful wife and children, a comfortable home and luxury car, and plenty of money in the bank. When he learns that his estranged brother, Sung-chul, has gone missing, haunting memories of their troubled past urge him to visit his brother’s apartment in search of answers.