An intelligent Dromaeosaurus named GerG (or maybe just an actor playing GerG in a story, it’s hard to tell), prepares to travel 70,000,000 years into the future in order to pave the way for all the soon-to-be-extinct dinosaurs to escape.
There exists but one node of time/future open within the range of our frames. You must go there and prepare the way for our exodus. Else, the supernova shall extinguish us all.

Variants

(1)
  1. “Twist Ending” by Barry B. Longyear, in Asimov’s Science Fiction, November 1979.
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Barry B. Longyear