Park Won Bin

Ex-couples who keep their past relationship a secret, live together to look for love, whether it’s to rekindle what they had with their ex or to exchange what they had with someone new. Heart flutters, jealousy, the mixed emotions of falling in love with someone new or perhaps falling for the ex again. Will the singles find love while living with their ex?

A former arm-wrestling champion raised in the U.S. returns to South Korea for a tournament that could return him to glory, but he finds his life complicated by the appearance of the biological family he never knew.

Ex-couples who keep their past relationship a secret, live together to look for love, whether it’s to rekindle what they had with their ex or to exchange what they had with someone new. Heart flutters, jealousy, the mixed emotions of falling in love with someone new or perhaps falling for the ex again. Will the singles find love while living with their ex?