11-year-old Christian lives with his Italian mother Gioia in poverty on the island of Ischia. His German father died in a rescue mission before Christian was born. The kind boy had an unremarkable and calm life until, one day, his grandfather Carl Schneibel finds him. Schneibel is a wealthy businessman who had never seen Christian before. Since the old lonely man has no heir, he decides to take Christian in and offer him a good education. Schneibel has never been on good terms with his son and never liked his son’s choice of wife, so he decides that Gioia must not come along. Despite, Gioia does not wish to obstruct her son’s future and allows him to go. Thanks to his good nature and his kind ways, Christian wins the heart of his grandfather and changes his life for the better.

As every year, German brewery tycoon Karl Schneibel spends the summer holiday on an Italian island with his beloved grandson Christian, near the children's home run by his ma, Dr. Gioia. This year however, Christian's heart isn't in his summer fling but his lover at home, Anna, daughter of Karl's general manager Dr. Werner. Christian has a bad eye in Veronica, the woman who became Karl's much younger lover 'by travel fate', the first thing soon proved untrue. But by then, the Schneibel firm and estate have been taken over according to an elaborate conspiracy, which Christian takes on with some help from his friends.