She is an ordinary girl who changes everything about her when she meets a "madman".
A former friend returns, only to be told that he is dead; an inexplicable voice says that he is back for revenge.
Thousands of years later, they met again, and faced various tests and trials; they returned to a thousand years ago, just to renew their relationship after a thousand years.
The true identities of Su Ci, Han Xuanfei, Ke Luo, Lan and Qing...