Jo Yeon-joo is a cynical and corrupt prosecutor who will do anything to climb the social ladder. Her life takes a drastic turn when she gets into a car accident and wakes up with amnesia, only to be mistaken for Kang Mi-na, the daughter of a powerful conglomerate family who looks exactly like her. Trapped in the life of a mistreated chaebol daughter-in-law, Yeon-joo must navigate the treacherous waters of a wealthy family while trying to uncover the truth about her own identity and the conspiracy surrounding Mi-na's disappearance. As she adapts to her new reality, Yeon-joo’s feisty and outspoken personality clashes with the rigid, oppressive environment of the Hanju Group. Along the way, she forms an unlikely alliance with Han Seung-wook, a man who returned to Korea to uncover the truth behind his father's death. Together, they work to dismantle the corruption within the conglomerate, leading to a comedic yet suspenseful journey of self-discovery and justice.