After a mining crew on a far off planet makes a disastrous first contact with an alien civilisation, General Eron Ryle (Frank Grillo) and the leaders of Earth's Alliance of Government's debate if there can be peace between "us and them".
Notorious war hero Gen. James Ford (Bruce Willis) is called upon to lead a squad of elite soldiers to an alien-infested Alliance Colony, Ellora, and find the coordinates of the invader's homeworld in the hopes of launching a preemptive strike to end a war before it can begin. Along with ethnologist Dr Lea Goss (Perrey Reeves), bull-headed Specialist Braxton Ryle (Brandon Thomas Lee), demolition expert Dash Wick (Corey Large), and quantum engineer Lt. Fiona Ardene (Adelaide Kane), Ford's mission goes awry and the squad is forced to reckon with the idea that they could be colonised by the invading army.
Goss - the original architect of Operation: Cosmic Sin - is captured and her body is hijacked, and she becomes a vessel for the aliens to communicate with the Alliance. But Lt Ardene realises the aliens have built a biological-portal connecting their home-world.
As the two civilisations face one another, the stage is set for a devastating solution.