Release Message:  Buck Rogers (Buster Crabbe) deals with warriors from a strange planet, a daring adventure into the stronghold of the world dictator, and a war pact with a foreign Prince.

Description:  As his rocket ship is about to be crushed between the great gates of the Hidden City, Buck blasts a hole through the floor and his party escapes to earth using degravity belts. Here they are arrested and taken to Dr Huer, scientist general, where they are immediately freed. They report their experiences on the planet Saturn, and plan some way of fighting their enemies. Prince Tallen comes to sign a war pact with Killer Kane, despotic world ruler and Buck and Buddy make a daring trip to Kane's palace to present the agreement. Tallen learns that Kane is a crook and wearing a degravity belt, starts to leave with Buck and Buddy. The guards turn a searchlight on them, and a paralyzing gun which imprisons them helpless in midair as machine gunners load their weapons.