Bats: Human Harvest on AllMovie

This horror film focuses on a rogue weapons research scientist who, after losing his project to a shut-down by the American military, sets up camp in the Belzan forest of Chechnya. A team of hardcore Deltas are making their way through the wilderness to find the doctor's lab before the Russians do, but they're confronted by unanticipated terror when they run up against the scientist's project: a massive cloud of bloodthirsty bats.