William's best friend, Jason, seems to be leaving him behind. He has shot up in height, has a new mountain bike, and he has 'jumped the trains', the local test of bravery. The idea of throwing himself onto a moving train terrifies William, but how else can he prove his courage? The answer comes in the shape of his birthday present from Mrs Phillips - the magic token that once before took him back to an ancient kingdom. This is something to show Jason! But when the two boys and their bikes make the time leap they find the kingdom and William's old friends menaced by a terrible evil. As they battle to save the castle William and Jason discover that there is more than one way to become a hero. The exciting sequel to Castle in the Attic.