Three high school students - Sung Hwan. Woo Sup and Jin Won - are on their way back from a birthday party for Sung Hwan's father. Several minutes later, a huge lump of cash and a bloody corpse crash on top of their car. With only a split second to decide, there is no option left for them.
Meanwhile, a dedicated young detective named Ji Hyung suspects Sung Hwan, Woo Sup andJin Won of hiding the money and watches every move they make. In the meantime, the real thieves and a ruthless gang are looking to get their money back. After the case gets terminated, Sung Hwan, Woo Sup and Jin Won secretly go to the place where Sung Hwan stashed the money. They look inside a pit to discover a new surprise waiting for them.