Min Ho, a music producer who is struggling to write a new song because of the lack of inspiration. He is told by his manager that he has to find love so he would have emotions to write a new melody. He then meets a Chinese tourist named Ling Ling. Min Ho is inspired by Ling Ling but due to their language barrier he decides to adds her as a friend on the mobile messenger app LINE to communicate with one another.
It all started when Takashi, a talented composer who could not write a love song ever since his girlfriend Rina left him suddenly, accidentally sent an incomplete piece of his latest work to Amane via email. Deeply touched by his music, Amane wrote back to him, without getting a reply. Amane continued writing to him, pouring out her thoughts. Only when she signed as "Teru Teru Bozu", did Takashi responded with a mail saying "WHO ARE YOU?", because what Rina left him as a farewell gift was a teru teru bozu!
