The Dam plot
The film takes place during the large-scale Russian invasion of Ukraine. After the Kakhovka Dam is blown up, a detachment of Ukrainian soldiers led by a female fighter named Mara finds themselves trapped in a secret Soviet bunker at the bottom of a reservoir where the USSR conducted human experiments during the Cold War. The consequences of these experiments are still visible in the bunker in the form of the half-living corpses of Soviet soldiers. To survive, the Ukrainians must now defeat the zombies and their own fears, overcome internal conflict, and trust each other.