After being dumped harshly by her boyfriend for not being compatible, Mio, drunk on heartbreak, signs up for a dating app to find a suitable man for herself. However, the first guy she matches with is surprisingly her coworker, Sakuma! While they end up wrapping up the conversation casually, Sakuma, who remembered Mio mentioning her interest in their coworker Iwamoto, invites them both for a casual drinking session at home...
