Hyun-woo finally gains his long-awaited freedom, but his ex-wife, Sun-young, unexpectedly returns with their old friend, Sang-chul! Sun-young never wanted to be single, but life without Hyun-woo proves difficult, until the perfect man, Sang-chul, appears. Sang-chul, eager to end his single life, seeks dating advice from none other than Hyun-woo, leading to unexpected chaos. Thus begins the tangled and inescapable journey of three people trapped in an endless cycle of singlehood!