Every time it rains, someone’s voice from another side will always be louder and clearer. In this world, there is someone who is born to belong to another one. Everyone calls its destined mate “Soulmate”, but there were lots of people that until the end of their lives, they could not touch the feeling of Soulmate.

Man Liu was also one of those people who had never touch his own Soulmate. He chose to leave Thailand to start a new life in Taiwan, the small island, with someone he missed there. On a heavy raining day, he met a strange man who was sleeping in the rain. This was the beginning of a story between Man Liu and Yang Si Ting, a next-door weird man who came along with his dog to have a role in Man Liu’s life.