Na Bong-sun is a timid assistant chef with low self-esteem who can see ghosts due to her grandmother's shamanistic background. One day, she gets radically possessed by Shin Soon-ae, a confident and mischievous virgin ghost who believes she can only resolve her earthly regret and move on to the afterlife by losing her virginity to a living man. Soon-ae targets star chef Kang Sun-woo, the arrogant culinary boss whom Bong-sun secretly has a crush on. As Soon-ae frequently takes over Bong-sun's body, the normally shy and invisible assistant chef transforms into a bold, charming, and vivacious woman overnight. This sudden personality shift completely baffles Chef Kang, who finds himself inexplicably drawn to the new, vibrant Bong-sun. However, as the romance begins to blossom, dark secrets regarding Soon-ae's mysterious death start to unravel, putting those they love in unexpected danger.