Honeymooning couple Monica and Mike check into a motel in New Mexico. All seems normal until an ambulance pulls up and abducts Mike. Monica narrowly escapes and, with the help of truck driver Bill, discovers the awful secret of the motel and the ambulance service.

A sailing boat takes package tourists in a party mood to various Spanish islands. One of them is desert-like, barren and barely habitable. Away from a small village stands an abandoned, dilapidated villa. It arouses the curiosity of Wolf, a young man in his mid-thirties. He spontaneously has the idea of buying it as a vacation home. So, gripped by a thirst for adventure, he stays behind on the island alone to make detailed inquiries. However, he has no idea that the few inhabitants of the island have mistaken him for the heir to the villa. But before he can clear up the misunderstanding and uncover the secret of the only freshwater well hidden in this house, a nightmare begins: he becomes embroiled in a fight to the death...

Professor Lichtwitz, a successful architect and notorious womanizer, secretly accesses his penthouse via his office. Employee Bodo, assuming Lichtwitz is away, invites dentist’s assistant Stella to the “vacant” penthouse for dinner. Unaware of his boss’s return, Bodo and others, including Lichtwitz’s wife, believe the penthouse is empty, triggering a hectic swirl of mistaken assumptions and visitors.

Three guests in a luxury hotel. The highly respected managing director of a computer company, an actor and womanizer and finally a bespectacled murderer who has calculated that a hotel room is the perfect setting for the murder of his victim, a Chinese politician passing through. As luck would have it, the three men swap rooms. As a result, the call girl, who is actually expected by the actor, ends up with the murderer, the respected businesswoman expected by the manager goes to the womanizer and the businessman's real wife, who (unexpectedly) turns up to accompany her husband, suddenly finds herself in the same room as the call girl and the murderer. Events come thick and fast and the murderer, whose glasses have been broken in the confusion, is unable to carry out his murder.

Four contemplative stories about problems with love: "Profitability" is about money, "The Smile" is about coping with a difficult situation, an "Experiment with Alf" is supposed to save a marriage, and in "Paternity" a lawyer and her husband are committed to a little girl who is the subject of a lawsuit.

Ruth lies to her husband Karl about visiting her sister to sneak away with her lover Andreas. Meanwhile, Karl invites colleague Daniela over. Their plans collapse when robbers Schelling and Kramberg pose as TV technicians, tying up Andreas and hiding Daniela. They exploit secrets to pit Ruth and Karl against each other.

Anna, married to the lawyer Rainer, despite all remorse, begins a liaison with the charming pharmaceutical representative Lars - fortunately the husband of her friend Bettina. Their meeting in a luxury hotel has fatal consequences: Anna and Lars are ear-witnesses of a supposed murder on the head of a call girl ring. Mistakenly, Anne's brother Max was suspected of doing something. Bettina, who has useful contacts due to her thriving wellness center, ensures that Max is released on bail. However, to acquit him they need Anna's statement - which would inevitably reveal her affair with Lars. So there has to be another solution...