Sünde, Sex und scharfe Katzen(1980)

Stressed-out building contractor Ingo wants to take a few days' vacation from work and his wife. So he travels to Portugal with his friend Walter, where he has a few sexual adventures. But then he meets Kirsten, who reminds him of his wife Vera, and not just in terms of her appearance. They have a wonderful time together, but Vera follows Ingo and finds out about his sexual escapades.