Christmas is coming and Santa is more stressed and bad-tempered than ever. Once, at night, after falling asleep in his office, he wakes up in the morning in a child’s shoes. Little Santa Claus, helped by his brother Elzio and his niece Peggy, through the Puffins cartoons, will find a way to become an adult again and to retrieve the true spirit of Christmas, discovering who is trying to sabotage Christmas.