Tae-young, an emotionless manager at Sports and Passion, is drawn into a tough situation when his brotherly friend, Hee-won, gets involved in illegal gambling. Tae-young steps in to help, but the culprits refuse to mend the harm caused by Hee-won's inability to meet his obligations legally. To save his life and Hee-won’s, Tae Young must find the vanished legendary boxer, Lee Kwon-sook.

Tae-young successfully tracks down Kwon-sook, who is now going by Yu-ri. With a tight deadline of three months, he must manage to settle a staggering sum, with the potential aftermath beyond his grasp. Whether Kwon-sook decides to step back into the ring or not holds Tae-young's fate and his very lifeline. Gradually, he starts appearing during Kwon-sook's morning runs, and the sustained annoyance he displays starts to trigger her interest.

Tae-young presents an offer to Kwon-sook, assuring her that he can fulfill her desires in a mere three months. Taking time to reflect, Kwon-sook eventually consents to partnering with him. Unfortunately, challenges arise right from the start. Meanwhile, love, an emotion that boxing had prevented Kwon-sook from experiencing, may be making its way to her.

In Kwon-sook's world, Jae-min is the exclusive source of her smiles. Conversely, Tae-young perceives Jae-min as a mere disturbance to the plans he and Kwon-sook have carefully crafted. Meanwhile, Soo-yeon assumes the position of Han Ah-reum’s manager. On the day of the match, Kwon-sook sits in the waiting room, trembling as though haunted by an intangible fear.

Tae-yong finds himself in an unforeseen situation when Gweon-suk brings him to her father's restaurant. Tae-young has no intention of revealing his prior encounter with Gweon-suk's father, but circumstances take an unexpected turn. Meanwhile, Tae-young's minor scheme leads to the cancellation of Ah-reum's title defense match, causing Ah-reum to storm into Gweon-suk's gym.