The Doctor's past incarnations are taken out of time by a forbidden time scoop device. The fourth Doctor becomes trapped in the vortex but the others find themselves, together with a number of their old companions, with the fifth Doctor and his companions in the Death Zone on their home planet Gallifrey. 　　Here they face a Dalek, a Yeti, a quicksilver Raston Warrior Robot and num... (展開全部)