An estranged brother-sister relationship, and one night that changed their lives forever. When Allie's brother David comes into town after being missing for several years, what starts as a quiet night with friends becomes an all-out brawl over manhood and owning up to your mistakes. Exploring themes of masculinity (both toxic and healthy), competition, and how we face the natural world, MOUNTAIN is about confronting our challenges, and whether we survive on the other side.