I wanted to like this film, I typically like Scarlett Johansson, and I'm indifferent toward Channing Tatum. I really don't think he's done that much good work, the conclusion that I've come to is that he's just not leading man material, he's not convincing, there's something about him that's off-putting, he's not particularly funny, and I think he would be much better suited to supporting roles.
Harrelson's government spook makes Johansson stage, you guessed it, a fake moon landing, as a contingency in case the real one fails. She reluctantly goes along with this, unbeknownst to Tatum, as the real landing is taking place, even though she feels like she's betraying him.
This extended finale is clumsily staged, but that's not what's offensive about it. The "Fake Moon Landing" narrative is one of the quintessential paranoid American folk legends, likely arising, I've always suspected, among the many people who insisted that the moon landing was a ridiculous folly and would never succeed--arising, like so much else in our toxic national discourse, from the common American inability to admit it when we're wrong. Fly Me to the Moon means it all facetiously, of course, but this doesn't strike me as the most auspicious time in our country's history to lend even that much credence to a conspiracy theory.
This movie tried to be a lot of different things, it tried to be cute, it tried to be funny, it tried to be charming, it tried to be clever, and I don't think it succeeded on any of those fronts. I found it an effort to sit through and I did not find it entertaining, so if it's not entertaining what is it?