30-Year-old photographer Yuan Chuxue is about to marry Ding Chen, an old classmate who has admired her for many years. Although she knows that she only has friendship but no love for Ding, she is already a left-over woman. She is under great pressure, urged by people around her, her mother is sick, and she has not met anyone she likes yet. Ding Chen, who has excellent conditions in all aspects, seems to be the best candidate. But as the wedding day approaches, the sudden appearance of the mysterious man Bai Ziyu rekindles her yearning for love.
Yuan Chuxue tried hard to restrain her love for Bai Ziyu, but unknowingly she fell deeper and deeper into it. On the one hand, there is a well-known destination and a calm and peaceful second half of life; on the other hand, there is the mysterious temptation and the obsession with an unknown destination. She was in great confusion and pain.
Just when she made up her mind to make a choice, she unexpectedly discovered that her entanglement with Bai Ziyu began with a snow disaster that occurred at K2 in the Kunlun Mountains three years ago. Bai's confusing life experience was gradually revealed, and the true face of this destined marriage was about to surface. The challenges that await them are far more than this.
This snowy winter is destined to be uneventful...