Kim Young Ho is a fitness coach who provides private training for Hollywood stars.Despite being from a wealthy family, a serious accident in his childhood completely changed his life trajectory.However, with his firm will and unyielding perseverance, he gradually overcomes numerous physical and psychological obstacles, and finally reaches the peak of self-reshaping. Kang Joo Eun is a 33-year-old lawyer.Over the years, she has shouldered the heavy responsibility of supporting her family while moving forward silently in the face of busyness and pressure.The burden of life not only bent her backbone, but also left traces of time and fatigue on her.Now, with a fat figure, she has decided to regain control of her life and face a new challenge about self-discipline and growth with firm determination - fighting for herself and embarking on a journey to reshape herself. The two protagonists come from completely different worlds, but they both bear their own pain and difficulties.When their life trajectories interlaced, a story about change, persistence and redemption unfolded.