A musical drama about a wife who asks her husband to help her find her childhood sweetheart as a birthday present. Though reluctant, her husband’s only choice is to set out on this journey with her.

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.

Sheila falls for Thenavan but he is in love with Kalyani, a one-hour conversation later ends up as a turning point for them as well as Kalyani’s ex.