Dominion (2015) on Netflix

Plot summary

Beings from the far reaches of space have studied Earth for a long time, and the planet's position in the universe now holds vital strategic value. Until now, they have only observed humanity from a distance. They know human weaknesses and have planned an attack. The strike is five days away. The attack will bring devastating results. Robert Casey, a retired US Intelligence agent who became a UFO investigator, races to learn what the Dominion intends for the human race. Jaelen, an observer from another planet, has fallen in love with a human woman and searches for her, hoping to rescue her before the attack begins.