Hino Miharu spends Christmas the same way every year, working alone at a dead-end part-time job at a convenience store. He'd do just about anything to land a full-time gig, but when he runs into a shadowy Santa Claus dressed all in black, he has no idea he's encountered the real deal. Well, almost. While the normal Santa Claus who dresses in red and white oversees Christmas for all the good boys and girls, his dark counterpart is in charge of handling the bad children—and Miharu just wound up on the naughty list. Gobbled up by a slavering, talking sack, he's spirited away to the Arctic, where he finds himself the newest employee of a massive Christmas operation. Yeah, the pay and benefits are great, and his coworkers sure are cute, but is this the dream job he's been hoping for, or the beginning of a Christmas nightmare?!