When it’s revealed that the culprit behind a notorious hit-and-run death case in Jeju — which enraged the entire nation — is none other than Han Ji-yeon, granddaughter of the powerful construction conglomerate Beomhan Group, the country is thrown into turmoil once again. Kang Sun-woo, a former taekwondo prodigy now working tirelessly at part-time jobs to pay for her mother’s hospital bills, struggles just to get by. One day, Executive Director Yoon from Beomhan Construction suddenly appears before her.

Shocked at first, Sun-woo soon listens to Ji-yeon’s side of the story. The car involved in the drunk hit-and-run did belong to Ji-yeon, but it was her friend who was behind the wheel. When the friend cowardly fled overseas, the world turned its anger toward Ji-yeon, mistaking her as the culprit. Seeing a side of Ji-yeon that defies the public’s prejudice, Sun-woo begins to feel a reluctant sense of sympathy for her.

Sun-woo wakes up gagged and bound in a run-down hotel room. The kidnappers, acting on orders from Executive Director Yoon, had mistaken her for Han Ji-yeon — the heiress of Beomhan Construction. Just then, another group of thugs sent by Ho-jung storms in, turning the room into utter chaos. Cornered and fighting for her life, Sun-woo unleashes her long-suppressed taekwondo skills and makes a desperate escape from the hotel.

Young-jae, a young man with Asperger’s syndrome, has long been a devoted fan of Sun-woo, once a promising taekwondo athlete. With no one else to turn to, Sun-woo decides to rely on Young-jae’s help to escape from the hotel.

Sun-woo is captured by Ho-jung and his men. Unaware of the truth, Ho-jung is convinced that she is Ji-yeon and forces her to sign a stock proxy document. Just as she faces a life-or-death moment, Executive Director Yoon and his crew burst in, and a violent clash erupts between the two sides.

At a secluded villa, Sun-woo comes face to face with Ji-yeon, who points a gun at her. Seizing a brief opening, Sun-woo overpowers Ji-yeon and ties her up tightly in the room. Determined to turn the tables, she begins to devise a plan to use Ji-yeon’s own scheme against her.