Mason hates Christmas, the whole Christmas season. Maybe because he's a delivery driver, maybe because his family lives way too close together, and there are way too many of them. He doesn't really know the reason he hates the season, but he really really does.
It doesn't help that he keeps crossing paths with this crazy, Christmas-obsessed girl. She wears ridiculous costumes, jingles when she walks, and every time she opens her mouth, a Christmas carol comes out. Mason doesn't know what her deal is, but she's seriously freaking him out.
For real, her name is Merry Christmas. That's insane, right?
Then a close encounter with an icy parking lot forces Mason to slow down for the season. With so much free time, he gets curious about this Merry person. Now, when he runs into her, he sticks around instead of running away. Merry's Christmas is so different from the Christmas Mason used to know, and he's determined to figure out why.