Lin Ran is an ordinary high school student at Zhangmu Middle School. He has a crush on his childhood sweetheart Xiamu. By chance, Lin Ran discovers that Xiamu is about to end his life. With the help of the "pendant", Lin Ran has a chance to change the future, but the condition is that he can only give up his original existence in this world and go to another world...
The idea: travel through time and space, all living beings are equal, and the male protagonists attack each other.