Cora, one of the last Sentinels, remains the last line of defense against an unknown enemy laying siege to her planet. Together with a handful of allies, Cora must find a way to protect the one thing this enemy had come to destroy - the humans.

Pilot X comes from a race of time travelers called the Alendans. Can he prevent the destruction of the universe?

The economics of Star Trek | foreword by Brad DeLong