Ji-woo, an outcast at a prestigious private school, meets Hak-sung, the school janitor who is actually a mathematical genius who defected from North Korea.
- PUAN VER
Künye
- Park Dong-hunYönetmen
- Lee Yong-jaeSenaryo
Choi Min-sikRi Hak-sung
Kim Dong-hwiHan Ji-woo
Park Hae-joonAhn Gi-chul
Park Byung-eunKim Geun-ho
Jo Yoon-seoPark Bo-ram
Tang Joon-sangTae-yeon