Mordecai - a sarcastic blue jay, and Rigby - a somewhat responsible raccoon, are best friends. They even work together at a park owned by Pops, a big lollipop-headed guy. Which seems normal enough. They've got a cranky gumball machine for a boss and they work alongside a Zen-like yeti named Skips. Yep. Everything is as regular as can be.
The guys celebrate their first Christmas in space by opening presents, eating peppermint bark and telling Christmas stories. Benson wants the stories to be more Christmas-y, but the guys keep adding scary elements, which only infuriate their boss.