Fresh off of an awful breakup, Shizuma Ikushima ends up heavily intoxicated and wakes up in bed with a strange man the next day. When confronted by Minato Mito, the man with whom he spent the night, Shizuma cannot remember a single detail of the previous evening. His forgetfulness offends Minato, who swears vengeance on Shizuma with a mean-spirited bet to seduce him and break his heart. But despite their rough start, the two grow closer. As they begin to fall for each other, Shizuma struggles with his sexual identity while Minato wrestles with unfamiliar emotions and unresolved trauma.