This has to be like the fourth or fifth movie featuring astronauts on a distant mission, but being about the psychological state of the lead character, in the last few years. This things are usually giving themselves away immediately: artificial gravity, LED light everywhere, big screens, big spaces, lectures for children about the Solar System given to trained astronauts, things unravelling or not making sense, but always, always someone obsessively thinking about people in their past: lovers, children, parents. Because it makes perfect sense for a person to go through years of rigorous training to perform a specific mission and then, when they get the job, out of a lot of hard working and highly motivated candidates, they spend it regretting things and thinking about the past. And they were the best candidate out of them all!
What's the point?! Who watched these and then said "yes, that's exactly what I needed! A psychological drama, but set in space, although nothing spacy really happens!"? Science fiction folk don't care about the drama of it, they want the action and the science and the gadgets and maybe to feel that there is more to life than just the daily whining of people. And drama people want some sort of highly emotional story involving multiple people, but somehow resembling their life, not some person in a small space having a fit. What a completely useless film!
So, yeah, let's call this small-space-fiction. And the writer is Nathan Parker, of Moon fame! He did one good film about a guy alone on a space station 15 years ago and thought to remake it, but without a story?
Bottom line: the story is so flimsy that I can't talk about it without spoiling it. All I can say is that this is not science fiction, because there is no science, and one can hardly call it fiction, because it doesn't have the coherence of fiction. It's like a nightmare that makes no sense and you barely remember when you wake up from it. The only positive thing is that it was decently acted.
