“The person I dreamt of… is this fate?!” Unha who carries bad luck with her and Haesoo who was once a swimmer meet again in a high school reunion 5 years after graduation. Because Haesoo does not have his own place, Unha offers to live together, and the two naturally becomes [sex] partners. Unha then meets Ju-eon at work, the man she has been dreaming of a lot recently. His unfamiliar appearance triggers Unha and Haesoo’s memories of their previous lives. Can the three of them find one another’s fate amidst their affairs and relationships which have been going on since their previous lives?