In 2353, Tom Corbett, a cadet at the Space Academy, shows off his ship, the Polaris, with his fellow cadets Roger and Astro, at a great exhibition on Venus. One night, two men dig a tunnel under the exhibition and steal the plans for a key that opens the safes of every ship. Now space pirates, they help the dangerous outlaw Bull Coxine to escape.
To stop them, Tom disguises himself as a prisoner and goes aboard their ship. So begins a chase across the solar system.
Fast and clear, this science fiction novel for young readers is easy to read in the language you are learning.
