In Our Prime

"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.

Director: Park Dong-hun

Cast

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