An ancient rivalry pits two legends against each other while a mission into uncharted terrain unearths clues to the Titans' very origins.

Bound for a remote planet on the far side of the galaxy, the crew of the colony ship 'Covenant' discovers what is thought to be an uncharted paradise, but is actually a dark, dangerous world—which has a sole inhabitant: the 'synthetic', David, survivor of the doomed Prometheus expedition.