Jack and Annie travel to Vienna, Austria, in 1762, where they meet the young Wolfgang Amadeus Mozart and his sister and help save the budding genius' life.
The magic tree house takes Jack and Annie to a moon base in the future where they continue to search for the fourth thing they need to free their friend Morgan from the magician's spell.
Having used their magic tree house to travel to India, where they must get a gift to help free the dog Teddy from a spell, Jack and Annie have adventures involving a tiger and other endangered jungle animals.
