Leo loves Christmas. And this Christmas needs to be absolutely perfect, because it's the first one without Mum. Only it all keeps going wrong! The fairy lights are in a tangle, the tree's wonky and the Christmas biscuits taste awful. Soon Leo decides he's had enough -- he makes a heartfelt wish that it would all go away. Then Leo wakes up on Christmas morning -- and it's gone! All of Christmas! But Leo isn't going to let it get away that easily. With the help of his best friends, Prisha and Ifan, he sets out on a mission to undo his wish and get Christmas back.