A genius mathematician with a hidden past and a needy student given up on math.

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.

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Main Cast: Choi Min-sik, Kim Dong-hwi, Park Hae-jun, Park Byung-eun, Jo Yoon-seo, Tang Joon-sang, Kim Won-hae, Ju Jin-mo, Kim Hee-jung, Kang Mal-geum

Director: Park Dong-hun

Writer: Lee Yong-jae

Editor: Kim Sun-min

Cinematographer: Park Hong-yeol

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