Storyline: Woo Jin takes care of his son Ji Ho alone after his wife Soo A passed away. Before she passed away, she promised she would be back on a rainy day one year later. One year later, Soo A appears again, but she does not remember anything.
Storyline: 15-year-old Mia is facing an overwhelming transformation which calls her entire existence into question. Her body is changing radically, and despite desperate attempts to halt the process, she is soon forced to accept that nature is far more powerful than her.