Plot
After his mother's death, 16-year-old Hyung-joo suspects that his father is not his biological father. A secret paternity test reveals that he is not. Confused, he uses his math skills to figure out his biological father and embarks on a journey with his best friend, Jisoo, to find him.
| Writer | N/A |
|---|---|
| Director | Choi Chang-hwan |
| Actor | Jeong Da-min, Kwak Min-kyu, Kim Se-won |
| Country | South Korea |
| Production | N/A |