On the ruins of the collapse of order, hope is a more powerful force than weapons, and the brilliance of humanity is the only fire to rebuild civilization. Lin Zhou survived alone in the university's experimental greenhouse, surviving by growing mushrooms and collecting rainwater. An attack by predators forces him to leave the hotbed and embark on a journey to find his father. When Lin Zhou was in crisis, Lu Yan came to the rescue. At first Lu Yan only wanted to go alone, but Lin Zhou persuaded him with the professional value of "I can find sustainable food sources" and formed a preliminary alliance. On the way, she rescued Chen Xiaoyu who was trapped in a community clinic by maniacs. Her medical skills made up for the team's final shortcoming. The iron triangle team of "knowledge-force-medical treatment" was formally established.
