Lin Xiaoyu dreams every night that she has become a completely opposite boy, while Jiang Chen from the ancient town of Jiangnan dreams that she is a strange city girl. They discover to their horror that their dreams are stealing each other's memories and skills, filling the gaps with fragments of each other's personalities. When a total solar eclipse allows them to talk in chaos, a bigger secret emerges: the thousand-year-old well that connects their souls is about to be permanently submerged due to water conservancy projects. As the countdown begins, two souls forced to "symbiosis" must run wildly between dreams and reality to find each other and protect their common foundation. This is a chase about identity, memory and sacrifice. They steal each other's lives, but are destined to become each other's only salvation.
