The Fourth Doctor and Adric learn from the wizened Keeper of Traken that a great evil has come to his planet in the form of a Melkur — a calcified statue. The Keeper is nearing the end of his reign and seeks the Doctor's help in preventing the evil from taking control of the bioelectronics Source that is the keystone of the Traken Union's civilization. The Melkur, via various deceptions, becomes the next Keeper. It is then, however, revealed to be the Master's Tardis. Its owner, still blackened and emaciated, hopes to use the Source's power to regenerate himself. The Doctor manages to expel him and install a new Keeper in his place, but in a last minute ploy the Master traps one of the Traken Consuls, Tremas, and merges with his body before fleeing the planet.Doctor Who 5" Action Figure Set, Keeper of Traken:Classic Doctor Who collector set: "The Keeper of Traken" (1981)Includes:1 The Fourth Doctor in Waistcoat action figure1 The Master Decayed action figure1 The Melkur Statue action figure1 Master's Tardis as a grandfather clock1 Source Manipulator Sphere accessory