Trouble is brewing on Earth, as plans have been stolen, and their guards have been killed. All evidence points to a robot being responsible; the robot in question being created by a think-tank, and is now sentient. One question remains: its basic programming prevents it from killing, so how can it be responsible? Yet, The Doctor is still recovering from his latest regeneration, and the clock is ticking for him to regain his senses and save the day...
