The Romanian Ministry of State Security has learned that foreign intelligence is hunting for plans for blue mines, where strategic raw materials are mined. This task is carried out by a gang led by a spy named Sea Cat.
The eruption of an oil well is much needed for the survival of the workers and their families living nearby.
An espionage agency is looking to kidnap Alina, the daughter of the Romanian engineer Muresan, to make her father divulge important secrets. On a trip, Muresan's wife and daughter know a young tourist who accompanies them up to a point where they are hosted by Matthew, a very agile little boy, hard-hitting the mountain.
