The legend of the Blue Devil's spell that has lasted for hundreds of years. The romance of campus + dream. Destined loneliness. Xia Xi accidentally met Ye Qi, they were just strangers who fell in love with each other. Lin Chen and Xia Xi have been punished for hundreds of years in this life. Lin Chen's strength, Xia Xi's cowardice, Ye Qi's calmness... And the people who exchange love together.