Nelly's monster sitting adventures are always full of surprises. She certainly can't believe it when she sits a monster who wants to do absolutely nothing! Or when she has to rescue the smallest monster she's encountered yet - but nothing can prepare her for spending Christmas Day with the Dendrilegs!

Nelly knows she's in for an interesting Christmas at the Dendrilegs, when she's greeted at the door by a flurry of purple tentacles. But It's not Father Christmas who'll be coming down the chimney...