Candace's (Bridgit Mendler) neighbor, a tough biker named Vince, thinks Mo got his dog pregnant and wants Candace to pay puppy support. She can't come up with the $1,200 he demands, so Danny (Chris D'Elia), Burski (Rick Glassman), Brett (David Fynn) and Justin (Brent Morin) pose as carolers to run a sing-and-snatch operation to grab a pooch and perform a puppy paternity test. Meanwhile, Shelly wants everyone to get in the holiday spirit and come together for a Christmas party before they all leave town for the holidays.