Lee and heavily pregnant Lucy are in a department store, where Frank is one of Santa's elves, on Christmas Eve and, along with Daisy, Anna and Toby, they are accidentally locked in at closing time before being taken prisoner by a gun-toting robber in a Santa Claus mask. Lee has a plan to bluff him, taking advantage of Lucy's condition, leading to a chase around the store, a few revelations and a happy event before the robber is finally thwarted.
—don @ minifie-1