This is one strange beast of a movie. Set in the fog-enshrouded mountains of Colombia, the action centers on the scrappy, Lord of the Flies–like members of a guerrilla operation called The Organization. When they aren’t dancing around bonfires, firing assault rifles into the air, and beating up on each other, the soldiers are training to do… something (the politics are intentionally vague). Their companions include a compact drill sergeant, a milk cow named Shakira, and a POW they call Doctora (Julianne Nicholson, fully invested in a physically demanding role). If you insist on likability in your movie characters, Monos isn’t for you, because these kids are basically assholes. Recommended mostly for the jaw-dropping topography, Mica Levi’s synapse-scrambling score, and the Apocalypse Now–level cinematography.