The film is dedicated to those who return the blue sky and all the colors of the earth to those who have lost their sight - ophthalmologists, their bold experiments and scientific research. The action takes place within the walls of the scientific Institute of Eye Diseases named after V.P. Filatov. The protagonist, who had already lost hope of seeing something, saw the blue sky again.
Paris, 1888. With the help of forensic medicine, a sensational criminal case is uncovered. The chief of the Paris Sûreté, Inspector Goron, with the help of Lyon University Professor Lacassagne, is able to solve a capital crime that seemed unsolvable according to the methods of forensic science at the time.
Sam and Buddy, two highway robbers, join with Colonel Quint, a big crook, who sold his services to Morgan, the banker, in order to free Baby, the banker's daughter, abducted by Espartero and his killers gang.
Don Serafin has a complex: to all the beautiful women always seen with a beard. To remove the complex and try to cure him, his friends will lead to Biarritz.
The innkeeper Barnabáš and the teacher Isidor Slovíčko succumb to the lure of old Moreles, to whom the young Taussig sends enthusiastic letters from America.
Two rival street gangs from Kowloon go to war over turf and bar girls so as to dominate the area and maximize their takings; however things go from bad to worse as the girls start to get involved in the bloody feud.
The story of a peasant whose harshness and bluntness only provoke disputes and anger, and his honesty and sense of truth and honor in conjunction with the previous qualities only exacerbate these disputes.
Abel Hradscheck, the owner of an inn in the Oderbruch country, faces financial ruin. For this state of affairs, Ursula, his wife and former actress, is by no means free of blame.