Watch on SFlix. On the night of Rusalii, a man is overtaken by Rusalia, a seductive spirit drawn from Romanian myth. What begins as a fleeting encounter turns into a trance-like possession, pulling him into a world where desire, fear, and folklore blur. As she moves through him—mind, body, and memory—he becomes both witness and vessel, swept into an ecstatic, perilous ritual that he may not return from.