The story takes place before the events of the main movie and follows the Bad Guys as they go on their adventurous journey through the city, planning to rob a bank on Christmas Eve while everyone else is celebrating at home. As they cruise around, their antics lead to an unforeseen incident when their car becomes tied to a beloved Santa Claus balloon during a parade. Unfortunately, they accidentally destroy the balloon, which causes the entire city's festive spirit to plummet, leading to the cancellation of Christmas celebrations altogether.
Concerned that their heist might be thwarted by the holiday cancellation, the gang decides to try and lift the town’s spirits instead. Initially, Webs suggests replacing the fallen balloon with a Santa Claus exoskeleton she built, but the team dismisses it because they think it looks too scary and intimidating. Not willing to give up, Wolf proposes recreating a new Santa balloon, but the end result is so poorly made that they quickly abandon the idea.
With only 12 hours remaining until Christmas morning, the Bad Guys come up with a daring plan to set things right. They aim to break into a local radio station to broadcast cheerful Christmas carols again, which have been silenced and replaced with heavy metal music. During all this, Wolf and Snake break into homes to steal and deliver presents, trying to bring joy back to the children. Their efforts are successful, but Wolf feels that the holiday spirit is incomplete without snow. So, Webs modifies a shaved ice machine to produce snow, but Wolf, in an attempt to make the moment perfect, increases its power beyond instructions. This causes an unexpected snowstorm to unleash chaos across the city, creating an icy nightmare that puts everyone at risk.
The gang quickly scolds Wolf for pushing things too far, but Wolf defends himself, explaining that his motivation was to create the best possible heist, not to show off. Seeing that the storm has gotten out of control, Wolf uses the Santa Claus exoskeleton to deactivate the ice machine, which helps stop the storm. Remarkably, the exoskeleton becomes an instant hero and mascot for the town. Meanwhile, Shark uses the microphone embedded in the exoskeleton to urge the citizens to return to their homes and stay safe.
After their chaotic night, the Bad Guys retreat to their hideout feeling under the weather—literally—since they have caught colds and can no longer proceed with their original plan to rob a bank. To their surprise, they discover presents from Santa Claus waiting for them, recognizing that their good deeds during the night have earned them some kindness. This unexpected gesture sparks a new idea among the gang: they begin to devise a plan to break into Santa’s workshop itself, motivated by the desire to prove they truly belong on the naughty list.
Throughout their misadventures, the team demonstrates that even bad guys can have a change of heart and make a positive difference, especially during the holiday season. Their efforts to bring joy and hope to the city showcase themes of redemption and kindness, all while navigating a series of comical, chaotic events that lead to a heartwarming conclusion.
