This is a modern fantasy setting where "play love but love comes true". Shen Jingzhe's reincarnation is not a rebirth, but a "reincarnation contractor" trapped in the gap between this world and another world; she must be fully resurrected by "establishing a two-way emotional link with a true person." As a contractor, Xiao Yan believed that everything was just mutual benefit. When false love continues to erode the true heart wall, the ultimate price is - if Shen Jingzhe falls in love with her, he must disappear from this world forever.
