Jeonghan is a single parent who have four kids, Seungcheol is a single parent who have three kids. They first met at their kids' elementary school and somehow decided to adopt four other kids. Life is beautiful. Or Jeongcoups who have kids!vocalunit and kids!hiphopunit and they decided to adopt runaway!orphaned!kids!performanceunit who Jeonghan sees spend their evening at the playground and Seungcheol sees pickpocketing in the morning.