The Mézga family goes to the field to pick cherries. However, the harvest is scanty and full of worms, and the vines have not even sprouted. Géza wants to prove to Paula that he is turning their garden into a model farm. To do this, he asks Öcsi for help, who sends a growth-stimulating device from the 30th century, which allows the harvest to be done in two weeks. However, it is forbidden to enter the irradiated area without protective clothing. And if the proper spraying is not done, there may be some problems.