[1] Goo Chul-joong (Kim Joon-woo) struggles to survive as he takes care of his severely disabled sister Goo Mi-joong (Ahn Ha-na).
With no income and in debt, he begs his uncle for handouts and resorts to stealing.
For a long time, Mi-joong has a crush on his friend Kim Chang-gi (Choi Hong-jun) who has yet to repay his debt.
One day, Chul-joong coerces Chang-gi to have sex with Mi-joong as partial payment of his longstanding debt.
Chul-joong also allows Gil Deok-ho (Gil Deok-ho), the mentally challenged son of a Chinese restaurant owner, to court his sister, hoping to marry her off and extricate himself from this living hell.