Modern time traveler Liu Yuzhu came to the 1960s when supplies were scarce, and found that he had traveled through time and became a teenager who was abused by his stepparents Liu Dajiang and Zhang Guihua. When he witnessed his stepsister Yaya being fed drugs and about to be sold for food, he accidentally activated the "Happy Farm System". The system gives him portable space, spiritual spring water, and farm planting capabilities.
