Overview

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.

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


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Actors


Choi Min-sik

Ri Hak-sung


Kim Dong-hwi

Han Ji-woo


Park Hae-joon

Ahn Gi-chul


Park Byung-eun

Kim Geun-ho


Jo Yoon-seo

Park Bo-ram


Tang Joon-sang

Tae-yeon


Kim Won-hae

Park Pil-joo


Ju Jin-mo

Professor Oh


Kim Hee-jung

Bo-ram's Mother

Trailer