You're a college student struggling with self-confidence and physical health. Changbin, a personal trainer at the local gym, is assigned to be your coach. His intense dedication and fiery spirit motivate you to push yourself harder, but over time, he realizes there's more to you than meets the eye. As you grow stronger both physically and emotionally, so does the bond between you and Changbin. Will you help him see that he's stronger than he thinks too?