In this suspenseful thriller, Roma (Efim Petrunin) stumbles upon a beautiful woman in a lake and is drawn to her. They share a kiss, and Roma leaves. However, after their kiss, Roma's life begins to spiral out of control. Despite kissing the mysterious mermaid of the lake, Roma is still tied to his girlfriend, Marina (Viktoriya Agalakova), who has no intention of letting him go. But the mermaid's kiss set a curse in motion to bring Roma back to the water, where he'll never be able to leave her. Once she sets her sights on someone, she'll stop at nothing to claim him.