When she was 22 years old, Cheng Xia met a man who held a wrong map in Mount Kailash, and also met himself ten years later.
On the night of the full moon, the souls of Cheng Xia in the future and Zhou Yu in the present exchanged: he lived in her body ten years later, and she occupied his current skin. From then on, every full moon, the two exchanged memories in their dreams, working for each other, going on blind dates, telling lies, being suspected by family members, and learning one thing for each other - before loving others, you must first learn to love yourself.
When their identities were revealed one after another, they finally discovered that there was a door hidden in the snow-capped mountain that allowed them to go home.
But the price of going home is that you have to let go of your other self.
