The heroine Lin Xi and her best friend went from Wenzhou to Chongqing to attend high school. They arrived at their destination in advance to familiarize themselves with the environment. They moved into a student apartment called Miss Dong, met the male protagonist by chance on the road, met the male protagonist at school... All kinds of encounters made the two people develop feelings for each other. Then one day... Lin Xi discovered that she was not from this world, so where did she come from...