A schoolboy arrives home and reheats some stew that has been left on the stove. He goes to taste it, but the narrator tells him to stop and look in the pot. Cartoon germs are seen on the surface of the stew. As the temperature increases more germs appear and they dance to swing music. However, when the temperature reaches boiling point the germs die. The schoolboy can now eat the stew. A butcher's is shown with glass cases used to protect the meat. The narrator explains that utensils or paper should be used to handle the food. A domestic kitchen is seen, and the proper way of washing up and drying dishes is shown. The film ends with the narrator stressing the points made throughout the film.