After a failed marriage, Taehwa Han, an omega, has a one-night stand with his brother-in-law, Yi Shin Yoon, an alpha and famous actor, resulting in a child—Siwoo. Four years later, Yi Shin reappears in Taehwa’s life, unaware that he has a son. Taehwa keeps this secret, grappling with old feelings and the painful truth of their relationship. As they reconnect, Taehwa must decide if they can rekindle their relationship—and whether Yi Shin will accept the son he never knew he had.