The spirit of the evil Dr. Mabuse takes over the body of a famous professor. The professor/Dr. Mabuse then begins a new crime wave that terrorizes the city.

A chemist and his assistant make a groundbreaking discovery. They manage to make butter directly from pasture grass without having to deal with either the cow or the use of dairy products. An industrialist attempts to seize the invention.

Each evening, before saying their prayers, some children swallow their cod liver oil. One evening, the youngest child makes a daring request in his prayer.