During the Japanese colonial rule of Korea, while people are in despair, Jae-ho tries to raise morale by winning cycle championship. Bok-dong, who started cycling with Jae-ho just to make a forture, becomes a symbol of hope for Koreans by defeating Japanese cyclists.

The one who tries to hide VS the one who wants to reveal A shocking scandal unfolds around the B Cut that must be revealed in order to survive! One day, a woman visits Seung-hyeon, who runs a smartphone repair and data recovery company. Actress Min-yeong, who once captivated South Korea, asks for the restoration of a B-cut, which should not be released to the world. Min-yeong's B-cut stimulates Seung-hyeon's curiosity, and he finds out that it will cause a huge scandal in Korea! The secret of the B-cut that someone wants to hide and that must be revealed is unlocked.

The massive scandal comes to light through a father's unwavering search for the truth behind the sudden death of his family.