Do Bong Sun is a gentle, unemployed young woman who comes from a family where the women inherit extraordinary strength. This power must be used responsibly, or it disappears. Although she looks small and harmless, she can overpower anyone who threatens her, which becomes clear when she defends herself during a run-in with local thugs.
An Min Hyeok, the CEO of a gaming company, witnesses her strength and decides she is the perfect person to protect him from an unknown enemy who has been targeting him. He offers her a job as his bodyguard and even promises a chance to work in game development, which aligns with her own dream.
At the same time, a series of crimes against women shakes Bong Sun’s neighborhood. Detective In Guk Du, her longtime friend and secret crush, is responsible for the case. Bong Sun and Min Hyeok become involved in the investigation as danger grows around them.
While learning to control her power and protect those around her, Bong Sun also finds herself caught between her feelings for Guk Du and the growing bond she shares with Min Hyeok. Her journey forces her to decide how to use her strength and what kind of future she wants as both threats and emotions intensify.