Incheon, South Korea in 1993, Doo-Seok (Sung Dong-Il) works as a debt collector. He looks intimidating, but he actually has a warm heart. One day, he goes to see Myung-Ja (Kim Yunjin) to collect debt. Unexpectedly, Myung-Ja gives her young young daughter Seung-Yi (Park So-Yi) as collateral. Myung-Ja is an illegal immigrant and she is deported from South Korea. Suddenly, Doo-Seok becomes Seung-Yi's guardian.