In the world a hundred years later, the triggering of the Immortality Contract 2.0 System allowed eighteen-year-old Nan Sui to return to the twenty-first century a hundred years ago, and his body transformed into the shape of a little milk cat. In order to obtain the immortality reward given by the system and change his own destiny, Nan Sui performed a mission in the 21st century and signed a guardian contract with the national idol Jiang Nian. In a series of stories, they witnessed the past life bonds, joys and sorrows of the people around them, and the gathering and separation of souls all stemmed from obsession, either staying together forever or redeeming each other. In the end, they discovered that they were also the protagonists of the story, and their stories contained concerns that spanned a hundred years of time and space.
Concept: Love across time and space