Ryan Reynolds does a good job delivering on a stupid script, but his character's behavior and that of just about everyone else is so irrational that it makes the movie difficult to watch. The premise is really better suited for a short film. It could have been a great film festival favorite as a short at 15 to maybe 45 minutes, but bloating it with irrational behavior and often absurdly unproductive dialogue was really, really annoying. Furthermore, much like the script the oxygen in that space seemed to outlast practicality. Again, better suited for a short film.