When a young boy accidentally triggers the universe's most lethal hunters' return to Earth, only a ragtag crew of ex-soldiers and a disgruntled scientist can prevent the end of the human race.

The crew of the colony ship Covenant, bound for a remote planet on the far side of the galaxy, discovers what they think is an uncharted paradise but is actually a dark, dangerous world.

Taking place after alien crafts land around the world, an expert linguist is recruited by the military to determine whether they come in peace or are a threat.