While doing their work on the deep underwater station two aquanauts discover strange mystery: it seems as if one of the aquanaut's girlfriend who recently died in a car crash had turned into a big manta fish. That manta writes words on the station's port-holes and tries to draw attention many other ways.
Film will be based on the female flying unit that fought in the Battle of Moscow. They were dubbed "Night Witches" by the frightened German soldiers because of the deadly stealth of their light planes.
Based on the stories of G.Seversky. Events taking place in the besieged Sevastopol during the WWII.
