The story continues at the point where the previous album is: After the successful launch of the rocket trying to contact the crew. However, there is a surprise, Fernandez have confused the time and are on board.
After a journey not without a shock, alunizan on the Moon, in the crater Hipparchus, where he assembled the team and begin the research and exploration of the terrain with the occasional anecdote. In one of the expeditions on the left in the Tintin rocket engineer and Wolff, comes into play Colonel Jorgen, Borduria cabal to take over the rocket and abandon the expedition on the satellite.
Tintin manages to thwart the coup but was forced to return to earth due to the insufficient supply of oxygen for the crew. After another attempt of the conspirators to seize the rocket (as a result, Jorgen dies in shoot his gun as he struggles with Wolff, who tried to prevent the colonel killed the rest of the crew. Later sacrifices her own life by jumping Wolff space for others to have enough air. the rocket heads to earth with insufficient oxygen, but eventually all come to earth safely.