Star Trek The Next Generation - Requiem

Twenty-five years after Captain Jean-Luc Picard brokered peace with the Gorn, he returns to their homeworld for further negotiations. However, a mysterious alien artifact hurls him through time and space, stranding him in the past on a crucial Federation world. As war threatens the galaxy and the Enterprise crew searches for their captain, Picard must make a difficult choice that could alter the course of history.