With time running out on him, an elderly Bart Simms fights to prevent the time capsule which created his Doctor Tomorrow persona from ever going back into the past. But the time-gazing Mushroom Cloud has other plans! Who will survive? Who will be history? And who will rise from the ashes to save the future? Could it be a new, younger Doctor Tomorrow?
Final issue. Amid death and destruction, will Jason Simms rise to the occasion and become the new Doctor Tomorrow?
— Description from Comic Vine community (comicvine.gamespot.com).