The 32-year-old programmer Chen Mo was reborn after a car accident and returned to the 18-year-old on the eve of the college entrance examination. He found himself back in the high school classroom in 2008. Facing a completely unfamiliar and familiar environment, Chen Mo gradually accepted the fact of rebirth and found that his memory gradually merged with his young body. He began to think about how to use the memory of his past life to change the trajectory of his destiny.