“I.S.S.” (** out of four) was a curiously flat and detached sci/fi melodrama set aboard an international spaceship comprised of Russian and American astronauts (Ariana DeBose, Chris Messina, John Gallagher Jr, and others) when a conflict breaks out on Earth and they are all given separate orders from their respective countries to take control of the spacecraft by any means necessary. Potentially intriguing and exciting storyline is hampered by humdrum execution. Film is full of visual and thematic derivations from “Apollo 13”, “Crimson Tide”, and (especially) “Ad Astra” but isn’t in the leagues of any of those.