Song Yan, the only son of the Song family, met Xu Shun, the daughter of his university professor, by chance. The two had a secret love. Three years ago, Xu Shun left the city where she grew up incognito on a snowy day. Three years later, Xu Shun opened a piercing shop in a border town. In the third year after her disappearance, an uninvited guest came to the shop...
Intention: If love lasts for a long time, how can we live together day and night?