Linda brings her new boyfriend, Kevin, home for the holidays. He's kind, considerate, and gets along with her parents (phew). There's just one teensy catch: he also happens to be an immortal, blood-sucking vampire, who, due to an unfortunate experience at an extra-dimensional potluck, nurses an eons-old rivalry with Santa Claus - and it's Christmas Eve
The town of Tlalpujahua, Mexico is the Christmas decoration capital of the world, where every day feels like a holiday. But just as factory worker Elena, and the town at large, start to lose their festive cheer, something unexpected happens. A sentient computer begins to ask questions about the meaning of Christmas, and things start to change...