Baek Seung-hyun (Ryoo Seung-bum) is a reclusive, genius-level mathematician who lives a quiet life in a small apartment. He has no social life except for his daily visits to a nearby lunchbox shop run by Hwa-sun (Lee Yo-won), a kind but struggling single mother. Seung-hyun secretly loves her from afar.
I will pay. Whatever it takes.
As Woo-shik and Soo-jin work together to find the perfect number, they become embroiled in a cat-and-mouse game with a group of ruthless gangsters who are also after the fortune. The film takes the audience on a thrilling ride, full of twists and turns, as Woo-shik and Soo-jin try to outsmart their pursuers and uncover the truth about the perfect number.