Director Agnieszka Smoczyńska's debut was originally released in Poland in 2015, making a splash ( ! ) at Sundance in 2016, where it won the Special Jury Prize, and is now getting it's international release. The director has apparently used the mermaid / siren allegory as a way of depicting her own teenage years, without having to include anything too directly personal. A mash-up of camp retro-bubblegum horror musicals..? No idea, but by all accounts, well worth checking out.