Everything seems peaceful...until Seung-Suh's old friend comes along and crashes his birthday party! Mi-Ha finds out that Seung-Suh dropped out of school because of this particular friend, Eun-Yang. Since that incident, their paths have never crossed...until now. Eun-Yang issues a sudden ultimatum to Seung-Suh, which somehow becomes a wager between Eun-Yang and Mi-Ha. Will she be able to take this?! Bring it on!