During the apocalyptic disasters, Jiang He binds herself to the 003 Management System and starts out with a pink pedal tricycle, running the Dawn Supermarket by completing bizarre missions to earn restocking time. She uses reverse marketing to warn people of crises such as extreme heat, extreme cold, hailstorms, and insect plagues, giving countless survivors a new chance at life. As the supermarket continues to upgrade, she breaks the apocalypse's law of the jungle and establishes an inviolable safe zone and a City of Hope.