Here’s what The Tomorrow War is allegedly about, per Amazon, which is where you can watch it:
Time travelers arrive from 2051 to deliver an urgent message: 30 years in the future mankind is losing a war against a deadly alien species. The only hope for survival is for soldiers and civilians to be transported to the future and join the fight. Determined to save the world for his daughter, Dan Forester teams up with a brilliant scientist and his estranged father to rewrite the planet’s fate.
Sure, fine, whatever! (To be frank, the ads make it look like a fake movie that you’d see in a film where Chris Pratt plays a jerky action star who is the humorous thorn-in-the-side of Paul Rudd, his mild-mannered brother-in-law who eventually needs his help to, uh, defeat his HOA or something. This is the sort of movie where the best part of it is the fake movie.) Anyway, people are in it! They all left their homes! I’m excited about that!