In 2015, Wu Xie came to Changbai Mountain, only to find that everything about Zhang Qiling had mysteriously disappeared.
There is no trace of Zhang Qiling's past.
Wu Xie was too stimulated and suffered selective amnesia. He remembered everything except Zhang Qiling.
Fatty told him everything about Zhang Qiling in the past, and Wu Xie decided to embark on a journey alone to retrieve the lost memory.