Five-year-old Peter and his older brother Hans drop the Christmas present for their parents in the middle of the road and it gets flattened by a car. Deeply distressed, they go to a Christmas fair and buy a lottery ticket with their remaining money. To their delight, they win a washing machine! Peter is especially excited when Santa Claus shows up and promises to transport the machine for him, but the old man instead vanishes with the boys' gift. Hans is convinced that Peter has been conned and chases after the fleeing Santa. But Peter simply cannot believe that Santa Claus could be anything other than kind and helpful.
Unfortunately the movie Der Weihnachtsmann heißt Willi is not yet available on HBO Max.
| Directing | Ingrid Reschke | Director |
| Editing | Erika Lehmphul | Editor |
| Camera | Jürgen Brauer | Director of Photography |
| Costume & Make-Up | Dorit Gründel | Costume Design |
| Art | Georg Wratsch | Production Design |
| Sound | Rudi Werion | Original Music Composer |
| Writing | Ingrid Reschke | Writer |
| Writing | Inge Heym | Writer |
| Writing | Ota Hofman | Writer |
