The two greatest science-fiction properties of all time crossover for the first time! Captain Jean-Luc Picard and the crew of the USS Enterprise have joined forces with the Doctor and his companions to combat an unholy alliance between the Federation"s most terrifying enemy and one of the Doctor"s greatest antagonists. But once the Cybermen turn on their Borg allies, the Doctor and Picard find themselves at odds over how to proceed against the threat, with the fate of the universe hanging in the balance!