This is the third and final story in the Josh and the Snow Dome series. Once again Josh, ably assisted by his sister Hayley comes to the recue of Santa Claus. Mr Bigwig and his Auntie Muriel plan to take over Christmas-land and demolish it so that they can build the biggest shopping and leisure complex in the world right at the North Pole. To do this they first have to convince the children that Christmas is old fashioned and not worth bothering with, to do this they use the 'Snow Domes of Doubt'. Josh and Hayley to the rescue.