The Last Survivors (2014)

Kendal, a teenage girl, fights to protect the last working well in a drought-stricken valley from a greedy water baron. At the edge of an expansive barren valley, all that remains of The Wallace Farm for Wayward Youth is a few hollowed-out husks of buildings. It';s been a decade since the last rainfall, and society at large has dried up and blown away. When a greedy water baron lays claim to what little of the precious resource remains underground, Kendal must decide whether to run and hide or bravely fight for the few cherished people and things she has left.