Youngsters Sune and Josefina meet Findus and tell him about Father Christmas. Very excited, Findus runs back to Pettson who is in the middle of inventing a new machine. Findus tells Pettson that Santa Claus is supposed to come soon, but old Pettson is not really listening. Findus explains to the old man that they must write a wish list to Santa Claus and asks Pettson why Santa Claus has never visited them before, so old Pettson writes a wish list for Findus. Findus wishes for Santa Claus to come and visit them on Christmas Eve and together Pettson and Findus put the wish list in a snow lantern.