Polish. 74 min. Although it is ten years old, it is basically unseen. ZERO votes at IMDb.
According to scientists, a period of increased electromagnetic activity of the sun is coming. Meanwhile, three friends: Ania, Adam and Robson are going on a weekend together to an estate far from civilization. On the way, they pick up a hitchhiker – Maja. Robson suggests that she spend a few days in the bosom of nature. The girl accepts the offer. It promises to be a wonderful vacation. Once there, Adam begins to isolate himself from company. He becomes dangerous. The idyll turns into a nightmare. The television continues to broadcast disturbing reports about the effects of increased solar activity…
I had never heard of her or this film, but if the subject interests you, the Polish Nudografia site has about two dozen more stills.