Park Si-wan

A debt collector who looks intimidating, but actually has a warm heart, ends up becoming the guardian of a child, who has been left behind as collateral by her illegal immigrant mother.

Min-kyung, who is preparing for civil service examinations while listening to a thief lecture. her struggling urban survival season.

While his mother is sick in the hospital and his father is always busy, nine-year-old Da-yi eats, sleeps, and manages to do everything well by himself. One day, he heads out on a short but lengthy trip to meet his mother with the help of his friends.