En route, a disgruntled Captain Haddock embarks upon an impromptu spacewalk, and the crew narrowly miss an exploding meteorite! But with declining oxygen supplies and an unwelcome cargo discovered in the hold, how will they ever return to the earth? Following on from the events of Destination Moon, Tintin finds himself in a rocket on a collision course with the moon. And with Snowy the dog, Captain Haddock, Professor Calculus and the Thompson twins aboard, things quickly spiral further and further out of control.