A poor and destitute cartoonist named Liu Shen accidentally witnessed a scene of alien apostles invading. At a critical moment, the student goddess Wu Shaojun piloted the Doomsday Mech First to save him, but the Earth was unable to do soIn order to save the earth, Liu Shen survived the ravages of the disciples and returned to his student days, embarking on a journey of salvation After returning to high school, Liu Shen met his former close friend Zhao Chengde and the goddess of the pastDuring his student years, Wu Shaojun, in order to adapt the tragic fate of his close friend, pursued his beloved goddess Zheng Hao, and in order to save her life, the two of them began their own "youth completion plan".During this process, the truth about the apostles invading Earth was revealed one by one