A singer, who goes to America hoping to make a career, finds himself involved in a drug trafficking case. He refuses to join this ring, and in his effort he is supported by a girl supports him in his efforts. The young man manages, with great difficulty and the help of a ruthless and self-serving manager, to make a career for himself and become rich. However, when threats from the mafia are added to the exploitation by his manager, the now successful singer abandons everything to return to Greece.

Professor Algeras becomes the target of foreign agents working for major powers, who use every legitimate and illegitimate means at their disposal to try to get hold of his scientific discovery. The most ruthless and unscrupulous foreign agent, who ultimately traps Algeras, is Milko, who comes from the countries behind the Iron Curtain. It eventually transpires that Milko, who has been brainwashed, was the professor's only son, lost during the communist child abductions.

The film tells the tale of three men, who have murdered the rich mother-in-law of one of them and four members of her family in order to steal her fortune. An unemployed man decides to kill his mother-in-law in order to take her property. But when, with the help of two accomplices, he sets fire to her house, his wife and their two children will die with her.