Yeogyeong has it all: she’s the heiress to a wealthy family and the youngest executive ever appointed at a major Korean corporation. But behind her picture-perfect life lies a secret she can never afford to reveal. Whenever it rains, her age changes. Born with a mysterious syndrome passed down through generations, Yeogyeong has spent her entire life bound by strict limitations. Then, during a seemingly endless monsoon season, a mysterious man suddenly steps into her carefully controlled world… And for the first time, the life she’s worked so hard to protect begins to change.