Chatwa, a law student with an ordinary appearance, has the ability to reverse time, while her sister Vivi can predict the future.

Vivi told her sister that on a snowy day in Bangkok, Chatwa would meet her soul mate, Four, and they would become friends.

However, there is such a rumor circulating in the university - “Four used to play volleyball and specializes in slamming the ball on people's heads, but now she still beats people!”

This made Chatwa feel that she was as far away from this person as possible, but she also felt that she and Four had known each other for a long time, and they were both strange and familiar at the same time.

But what Vivi didn't tell her sister was that when Chatwa and Four fell in love, Vivi's life also entered a countdown...