Life isn’t good for Zoe. Her Stepmother Sheila hates her and her Dad is never around.

She’s having a miserable time at the hands of school bully Tina Trotts, until she discovers a baby rat in her bedroom, names him Armitage and they quickly become firm friends.

But Armitage turns out to be no ordinary rodent. This rat can dance, and he’s got some serious moves. Zoe decides to enter him in the school talent contest. However, gross and greasy Burt, the owner of the school burger van, has other ideas, which include throwing Armitage into the mincer and putting rat burgers on the menu…

Catch our fabulous Sheridan Smith as Sheila in this hilarious and gruesome tale on Christmas Eve, 6pm on Sky1.