English-friendly: Smršť / Whirlwind

The protagonist of the film story is forensic psychologist Martin Lang (Tomáš Maštalír), who comes to a spa in the mountains with his wife Pawla (Anna Geislerová). They want to relax far from civilization and try to save the relationship. They are going through a serious partner crisis, which stems from a deeply hidden trauma, and this stay is an ultimatum for them - either they will overcome their problems, or everyone will go their own way. However, the cycle of routine days is disrupted by the arrival of a mysterious shipment - a package with evidence from the investigation of a tragic case. The sender is Lang's colleague, a psychologist. The latter needs help from him in a case known as the "death ride", at the end of which four were dead. Lang is reluctant at first, but gradually succumbs to an unknown force that draws him to the case.