Superstar a capella group Pentatonix is struggling to find inspiration for their annual holiday album, and the clock is ticking. To make matters worse, their well-intentioned but misguided manager mistakenly locks them in a magic mailroom. But with the help of some Disney magic, we’re soon on a whirlwind tour around the world, discovering holiday traditions and inspiration from Pentatonix fans all around the globe: from Tokyo to Grenada, Ghana to Mexico and Iceland.