Coco, who's all alone with no family since her mother died, has taken a job as a babysitter. The baby's single father is Benjamin, and he owns a ranch. As she begins to glimpse the sweet nature hidden under his built body, Coco starts to fall for Benjamin. Then one day, two men visit Coco to deliver what seems like impossible news—she is, apparently, a princess of Chantaine. While having a hard time believing it, Coco is curious to meet her family... Seeing her indecision, Benjamin offers to accompany her as her fake fiancé.