Findus is angry because Pettson has no time for him at all. Findus invents a coffee pot that automatically serves Singhild coffee. But no one really notices his invention. Singhild wants to know how far Pettson has got with the carved wooden Santa Claus’ but Pettson is only thinking about his Santa Claus machine. When the Mucklas steal a screw nut off of his machine, Pettson is enraged. He cannot see the Mucklas and suspects Findus of stealing the piece. Findus is offended that Pettson doesn’t believe him and runs away onto the farm. Findus stumbles on a roller skate and a turbulent journey into the realm of the Mucklas begins. There, Findus meets Sarah Tustra, and sees that all of Pettson’s stolen objects are kept carefully in her room. Sarah Tustra does not want to release the screw nut – unless she can exchange the screw nut for Pettson’s hat. Pettson looks for Findus everywhere but cannot find him. Pettson is really sad because he is gone. Findus is trying to teach him a lesson, so that he has time for him again. Findus wishes that Pettson is happy again.