Art Aimesworth receives a mysterious summons from Santa Claus and he shares a Christmas adventure with his sister that brings them closer together. On board pages.

"For Zelda, a Viking enthusiast who lives with her older brother, Gert, life is best lived with some basic rules: 1. A smile means 'thank you for doing something small that I liked;' 2. Fist bumps and dabs equal respect; 3. Strange people are not appreciated in her home; 4. Tomatoes must go in the middle of the sandwich and not get the bread wet. But when Zelda finds out that Gert has resorted to some questionable--and dangerous--methods to make money...