Tomka is a boy who likes playing football with his friends. When the German army captures his town, the German soldiers establish their camp in the town stadium. Tomka with help from his friends and their parents organizes sabotage actions against the soldiers.
Invited to a simultaneous chess game, Ilo Pinci, the specialist of fish and oysters, as well as a well known chess player, arrives at the small coastal town fully convinced to be better than the local chess players. But what makes his coming to this town even more interesting is his hidden desire to discover some technical and practical data on the oyster cultivation.
A repatriated man is killed in a small town. No one knows who the killer is. The chief investigator takes the case himself and starts unraveling the mystery.
