Everything seemed peaceful... Until a childhood friend of Seung-Suh came along and crashed his birthday party! Mi-Ha finds out that Seung-Suh dropped out school because of this friend, Eun-Yang. After that incident, they never met again - till this day. And suddenly, Eun-Yang gives Seung-Suh an ultimatum! But somehow, it became a wager between Eun-Yang and Mi-Ha. Will she be able to take this?! Bring it on!