The boy-band-turned-writer, Lin, receives an offer to have his book turned into a film from Yeon Seoho, a former fellow band member. Lin declines at first but decides to leave it to a bet. If Seoho can satisfy him on 5 dates, then he'd give them permission. And so, a business arrangement begins between the two with the bet depending on Seoho's performance.

(Source: Tappytoon)