Enter the magical festive world of the Christmas 'Tree-Dwellers', as Larry, a Christmas snowman, wakes up after the long sleep in the Christmas box, to find his brother is missing.

Desperate to find him before Christmas, Larry, along with his girlfriend Debbie, a newcomer Splint, and Larry's companion Tinsel, break the laws of the ‘Tree-Elders’ and escape down the tree and away into the house, to look for clues.

Away from the safety of the tree and in an unfamiliar world, the Dwellers stumble upon a dark and sinister secret that threatens their entire world. Can Larry and the group make it back to the tree in time to warn the others, and finally uncover the truth behind the ‘Secrets of a Christmas Box’?