The original 1967 master recordings of 'The Macra Terror' were lost soon after the programme's original transmission. However, audio-only recordings have survived and have been used to create a brand new fully animated reconstruction of this lost classic -
The Doctor and his companions arrive on a human colony in the far flung future. The colony outwardly appears to be happy and carefree. But behind it's cheerful exterior the colony has been secretly infiltrated by a race of giant parasitic crab creatures called the Macra.