Drawn ashore in 1980s Warsaw by the sounds of a nightclub band-and transforming into young women-mermaid siblings Silver (Marta Mazurek) and Golden (Michalina Olszanska) are taken in by the club owner, at first intrigued by their charisma and unusual singing voices, and then sold after contact with water makes them revert to their natural forms. Will becoming local pop sensations bring them happiness... or at least stave off their inclination to dine on human flesh? Unforgettable genre mash-up co-stars Jakub Gierszal, Kinga Preis.