From Netflix:

On a bleak future Earth, a soldier endures a radical genetic transformation to save humanity. But his wife fears he’s  becoming more creature than man.

From Netflix you can stream this 1 hour 37 minute sci-fi drama.

Because Earth is doomed,  the U.S. government has decided to try to populate Titan, one of Jupiter’s moons.  Titan’s environment (air, temperature, water) is harsher than that of Earth. Consequently a (mad?) scientist (played by Tom Wilkinson) has devised a radical restructuring of a body’s genome so that the resulting person can thrive on Titan.  Among the group of volunteers is Rick Janssen (played by Sam Worthington) whose wife Abi (played by Taylor Schilling) loves him dearly and is terrified by the treatments, suffering, and changes taking place in her husband.

Rather than full-fledged sci-fi, this is more a minor drama about how impending planet disaster affects a marriage.

Ignore the improbable details (how many people does populating a new planet require?), enjoy the yarn and the personalities.