Combine Independence Day with an episode of Doctor Who from the 80's but with a cast where the vast majority doesn't even reach the level of community theater. Special effects were probably made with a free filter on a mobile phone and the action scenes are either very bad (gunfights) or rather good (hand to hand) that go on forever. The really awful thing was the writing. The story made NO sense and the dialogue was appalling. To give you an idea where you are getting yourself into : at a certain point they want us to believe that an EMP was activated while you still see the lights on in the background and they step into a working (modern) car. There's more "sci" in an episode of the Teletubbies. If I hadn't been locked up for the last year with this pandemic, I would have gone for a pint instead.
I like to remind myself people worked very hard on these projects so I try to find something positive to write but I couldn't find anything. You have been warned.