The four-part epic first-year finale begins here! It took everything the Doctor had to defeat a single Hyperion, a mad and ancient living star that had been sealed away for millennia by the Time Lords. Now Hyperion tombs are opening all across the cosmos, with one awakening on the very edge of the solar system, with vengeance in its heart. How can the Doctor and Clara hope to stop the fury of the Hyperions from consuming Earth?