Andy and Terry are celebrating Christmas in their 156-storey treehouse which now has 13 new storeys, including an aquarium wonderland, a wishing well, a world record breaking level, a TV quiz show hosted by Quizzy the quizzical quizbot, a lost property office, a lost sausage office, a super-stinky stuff level and the amazing mind-reading sandwich-making machine, which makes the perfect amazing sandwich for you - every single time!