Pyrus is a young elf who lives in The Danish National Archives, where Chief Archivist Birger Bertramsen work alongside his new assistant Josefine Brahe. The young elf lives together with the old Archivist elf Gyldengrød and the elf girl Kandis, who just moved in and the.

Pyrus complains that he cannot get Christmas-presents, as Santa Claus doesn't give presents to elf's. Pyrus tries to conjure him with the help of a magical book to talk to him, but unfortunately Santa Claus is already in the National Archives when he does, which results in Clause losing his memories. Now the elf's must help Clause regain his memories by visiting historical events using the books in the archive. They meeting Saint Nicholas (the predecessor of Santa Claus), La Befana (who comes bearing gifts in Italy) and the American Santa Claus.