Committing a murder is considered to be a sin. Can they get away with it... ...without falling in love?

Youngjae is a first year student at university. Despite his tough family background, he is cheerful and lively. With his best friend who's called Yugyeom, they survived the first trimester. However, things happen to become more dangerous and exciting. Youngjae gets to know Jaebum, the handsome senior, who has a girlfriend. Apparently, the last two trimesters seem to be adventureous but risky as well.