This is a story about the past, present, and future. Xinai, who had been wandering for many years, returned to his hometown of Changning, and at the same time "encountered" his former self again. In eight years, things have changed. Xinai once thought that time had changed everything and changed his feelings, but when he thought of the memories again, it was he or himself who was reluctant to let go. Ebbs and flows, origins and origins, has the ending of the story already been decided?