Bing Lanyi, a girl born in the ice world, is as noble as a princess, but is trapped by a dream demon. By chance, she rescues Bai Ye'er, the leader of the Wuyou world. With Bai Ye'er's help, they discover that Lan Yi's dreams may be memories from the past, but isn't Lan Yi from the ice world? In order to find the answer, Lan Yi actually crossed the boundary layer. . .