Enredo

A couple pick up a hitchhiker on the way to their yacht. The husband invites the young man to come along for their day's sailing. As the voyage progresses, the antagonism between the two men grows. A violent confrontation is inevitable.

Well off Andrzej and Krystyna's marriage is at a stage where familiarity breeds contempt, that contempt which is outwardly shown only behind closed doors and only when an incident of some sort sets off one or the other. While driving through the countryside on a Sunday on their way to the lake to embark on an overnight sailing excursion, they almost run over a young male hitchhiker. Despite the antagonism between Andrzej and the hitchhiker, Andrzej offers him a ride as far as the marina. By the time they reach the lake, their antagonism has dissipated enough that Andrzej asks if he would like to join them on their sailing trip. The hitchhiker accepts despite knowing nothing about sailing. As the sailing trip progresses, the antagonism between the two men begins to increase again, fueled on both sides as each strives to be the alpha male. Andrzej needs to show his superiority, while the hitchhiker needs to show that his young age and inexperience, not only with sailing but with life in general, do not make him any less of a man in comparison. Later incidents demonstrate that their relationship may have been different if Krystyna was not in the picture. The hitchhiker's pocket knife, seemingly his most prized possession on his person, becomes a symbol of that power struggle between the two men. If the three emerge from their sailing trip alive, they may be forever changed by their encounter.—Huggo

Andrzej and Krystyna--a young bourgeois Polish couple who is already experiencing fatigue and emotional exhaustion in their marriage--pick up a handsome nineteen-year-old hitchhiker on their way to the marina. And, just like that, much to Krystyna's surprise, Andrzej invites the blonde student along on a yachting weekend. However, aboard the small and nimble vessel, little by little, a quiet but sinister undercurrent of intense violence and unbridled erotic competition for the lady's approval, will pave the way for a cruel exhibition of alpha-male bravado with unforeseen consequences. Who shall prevail when the sharp knife cuts the water?—Nick Riganas

A couple pick up a hitchhiker on the way to their yacht. The husband then invites the young man to come along for their day's sailing. As the voyage progresses, the antagonism between the two men grows. A violent confrontation is inevitable.—grantss

An attractive young woman, Christine, takes the wheel of a car belonging to her partner Andrzej, a sports columnist. While he criticizes her driving skills, a reckless student leaps out in front of the car. Andrzej gives the student a ride and invites him to accompany them on their yacht trip. Attracted to Christine, the student becomes increasingly clumsy. He spends his time jabbing the point of a pocket knife rapidly between the fingers of his other hand. Andrzek argues with the student, who topples overboard.—alfiehitchie