Do Bong-soon is a young woman born with superhuman strength, which she inherited from her family. She dreams of becoming a delicate and elegant woman, the ideal type of her crush, In Guk-doo. Despite her strength, she tries to avoid using it unless necessary to protect others. She gets a job as a bodyguard to Ahn Min-hyuk, the CEO of a gaming company, after he witnesses her strength. Throughout the series, she faces various challenges, including a series of kidnapping cases in her neighborhood. With the help of Min-hyuk, she learns to control her strength and use it for good causes. Her relationship with Min-hyuk grows as they work together to solve the cases, leading to romantic developments.