Hairy, beer drinking creature named "Zlopus" escapes from the institute of genetics. His hiding spot is the Kiepscy's house.

Boczek finds a glass fish next to a dump. At the beginning his neighbours are laughing at him, but when they find out the true price of the item, Ferdynand and Pazdzioch both want to get their hands on the glass fish.

Halina notices that her husband very often sleeps deeply for a long time. She decides to sign him up for an experiment in which Ferdek will sleep for 72 hours straight.

A Cupid comes to the Kiepscy's house to repair his broken wing with wax. He leaves his slingshot and ammunition in the living room. Ferdynand wonders what should he use it for.