Stupid movie made me cry. Koreans seem able to make these movies with outlandish premises and play them perfectly straight. In this one, some guy, ever since his eighteenth birthday wakes up with a completely different body every day. On a good day when he's a cute guy he makes a move on a pretty girl. In the hands of non-Koreans I think this would have ended with some magical way for him to stop changing (like, if the girl had sex with him and spent the night). This one doesn't go that way. Another good, weird, melodramatic romantic comedy from the Koreans.
Woo-jin wakes up in a different body everyday, regardless of age, gender and nationality. The only constant in his life is the girl he loves, Yi-soo, who knows his secret and loves him anyway. Each time he transforms, Woo-jin must figure out how to return to his own body and reunite with Yi-soo.