Why, Denzel? Why? My wife and I love Denzel, but his choice to do this script? Inexplicable.
The premise is this. Denzel, an ATF agent, is recruited to join a very special, experimental unit on their first case. Using unimaginable technology, this group is able to put together surveillance data from four satellites (and one would have to presume other sources as well) and, four days later, present it essentially as a movie. The preposterous (I know, I know, "Sci-Fi") part of it is they are able to swoop down to ground level and show video looking not only inside a building, but even a close-up of its occupants. Using the latest "heat technology," they can not only show the outline of a body, they can present how many hairs in an eyebrow, eye color, even expressions the person in view made that many days in the past. What's more, they can, even from space mind you, display non-heat producing objects like pictures on a wall! Yep, they can! But get this. With all this technology, they have no ability to record/save any of what they see! Fire the guy that forgot that element. So...
The current issue is a bombing that took 500+ lives and the determination to discover the "terrorist" responsible. "As luck would have it," a body washes up on shore appearing to be a victim of the bombing, but Denzel's character notices something that makes him dig deeper. Though intended to appear as just another victim, this person, we discover, was dead before the incident, but it is clear the bomber was in fact responsible for the woman's death. Denzel's take? Find the murderer, find the bomber.
Introduced now to this investigative team and their tools (even Denzel can't believe it, but of course the script told him to "suspend disbelief" so he does after only a few questions), he encourages turning the focus to this woman victim and track her life for those four days. Maybe, though the team is adamant "we can't change the past," they can see enough to track down the culprit. I will stop there.
Just, and spoilers begin right here, along with the omniscience necessary to go anywhere at any time from "four satellites," voices can be heard, notes can be read, and with heat sensor technology (?) even phone displays can be represented in 1080p. (I don't think 4k existed then. Maybe in the sequel.) The result of all this is indeed the capture of the bomber, not a Muslim of course, that would offend the PC's out there, but a fruit-loop "doing God's work." And then the fun really begins.
Afraid of exposing their technology, the investigative team leader calls everything off, but that doesn't stop Denzel. Instead he enters (you had to see this coming) a "time capsule" and goes back in time four days to try to stop the incident. (Anybody remember, "We can't change the past"?) But preposterous wouldn't be preposterous without, well, more "preposterosity"! (I just made that word up and I like it!)
Getting there "just in time" (after being revived in a hospital like a heart attack patient), Denzel rescues the girl but, himself is blown into little tiny pieces when the bomb, this time, goes off under water. No problem. Because somehow he was split in two and, in real time, though in real time he entered the capsule and went backward, he also didn't. That's right, up walks Denzel to investigate a different crime scene, only minutes after he was destroyed. Thank goodness there won't be big enough chunks of what was his other self to cause him to wonder, "Am I dead? Or am I really, really dead?"
I give. If you can suspend disbelief this much you're a better man, or woman, than I! I would give it 1 star, but there is Denzel, and face it. He is about as good as it gets at his profession. This was simply not the vehicle to prove it.