The Little One(2012)

When suffering becomes intolerable, our primal instinct kicks in and a victim becomes a survivor, the weakest prey deemed expendable as an unfortunate but necessary part of collateral damage. A withdrawn boy and his rebellious stepsister fall in love and lust in the shadow of their abusive father. The tipping point is passed one day and all hell breaks loose, releasing angst-ridden teenage yearnings for freedom that results in hurt, damage and blood.