Mi Ran, still reeling from heartbreak and haunted by her ex-boyfriend, abruptly quits her fitness journey, feeling lost and disheartened. Trainer Hyun Joong, unwavering in his belief that no client should be abandoned, makes a heartfelt plea for one more chance. Surrounded by supportive colleagues and torn between doubt and hope, Mi Ran stands at a crossroads—will she embrace a new beginning or retreat into her past?