Three holiday-themed vignettes:

(1) Poison Ivy and Harley Quinn kidnap Bruce Wayne and use his credit cards for a shopping spree.

(2) While shopping for a gift for her father, Barbara Gordon spots a group of shoplifters that turn out to be portions of Clayface.

(3) Batman and Robin race to stop the Joker from killing the crowd at the Gotham City New Year Celebration.

After the events in "SubZero" Mr. Freeze has been forced to be bound to a new robotic body. His wife Nora has been revived, but believing him dead, she has remarried and left Gotham. If Freeze can't have a life of happiness, nobody can, so he begins lashing out at the city by destroying what people care about so they can feel the same pain he feels.