Part 1 of the 2-part season finale! Series co-writers Al Ewing and Rob Williams team up for an unmissable mini-epic, as a year's worth of stories come to a head! Can the Doctor save his new friends from their time-twisting fates? Will Alice find peace - or be marooned far from Earth? Will ARC finally discover the truth about itself - or be reduced to atoms? Will Jones fulfill his cosmic rock god destiny - or die among the stars? And who will be left to join the Doctor as we head into Year Two?