A businessman mysteriously wakes up in an open-air prison cell with only an old grist mill. Forced to work as a beast of burden, he must find a way to escape before the birth of his child.
Mavka is a dangerous nymph of the forest lake that lure people into its depths for the mermaids to feed on their energy. When she meets Lukian, a biology whizz, Mavka falls in love disrupting the natural order.