When Helium starts wondering if Santa Claus really exists, Musse begins to tell the story of when their neighbor’s cat, Sigge, visited the land of Santa and met Santa Claus. He also tells them about the mean mole, Mull-Ulf, who does everything to ruin and stop Christmas. But can he succeed? And why is the mole so angry?

It’s up to Sigge to figure out what’s really happening in Santa’s land, and he must succeed in stopping Mull-Ulf, or else the entire Christmas is in danger!

The books about Musse and Helium have sold over 1 million copies and captivated children and adults across the country.

A festive tale for the whole family.