Finally, the answer to the incredible question asked by every child: So how does Santa deliver billions of presents to every corner of the planet in just one night? According to Arthur Christmas, it takes millions of elves, an ultra-high-tech Mission Control, the S-1, a huge, mile-wide, state-of-the-art sleighship, three generations of working Santas, a family in a state of comic dysfunction, and Arthur, an unlikely hero on an urgent mission that...