Missile to the Moon

Two escaped convicts, Gary and Lon, are discovered hiding aboard the rocket by scientist Dirk Green. Dirk forces them to take the controls and pilot the spaceship toward the Moon. He is secretly a Moon man who longs to return home.

Steve Dayton, Dirk's friend, and his fiancée June Saxton realize the vessel is about to launch and decide to investigate. They slip onto the spacecraft and, caught in the launch, become unwilling passengers when the ship lifts off.

During the flight, a meteor shower damages the ship and fatally wounds Dirk. As he dies, he entrusts Steve with a medallion and asks him to stay the course, telling him to seek forgiveness from the Lido when they land. Steve resolves to carry on despite the danger.

After landing on the Moon, the crew suits up and is soon attacked by rock monsters impervious to bullets. They retreat to a cave and light a torch, discovering breathable oxygen on the Moon and deciding to remove their suits and helmets. The revelation shifts the group's outlook on their survival.

Inside the cave, the travelers succumb to a mysterious gas and lose consciousness. When they awaken, they find themselves in an underground community of beautiful Moon women who seem to welcome the Earth visitors, especially Steve.

Steve is brought before the Moon queen, Lido, who believes he is Dirk. She thanks Dirk for his return as the Moon's oxygen supply wanes. Steve struggles to conceal his true identity while adapting to this royal deception.

Gary introduces himself to one of the Moon girls and quickly learns that the Moon hides a diamond mine. He begins to realize the planet's riches could impact their fate as captives and escapees.

Steve explains to June that Dirk left Earth years ago to return with a ship to help the Moon. To keep Lido from discovering his true identity, Steve arranges a marriage between June and Alpha, a blonde Moon girl.

Alpha informs Lido of the ruse after June's jealousy explodes into a confrontation. June and Alpha fight, and Alpha remains determined to marry Steve despite the exposure of the deception.

In a power struggle, Alpha murders Lido and becomes the new queen. The coup destabilizes the Moon society and heightens the danger for Steve and the Earth group.

June and the other Earth men are herded into a cave where they are stalked by a giant spider. The Moon's political turmoil traps the outsiders in a deadly environment.

Zema, a Moon girl who has fallen for Lon, helps the Earthlings by freeing Lon, June, and Gary from the cave and returning their confiscated space suits. Her aid shifts the balance and aids their escape.

During the climactic escape, Zema detonates a bomb that releases oxygen into the escape routes, allowing Steve, June, Gary, and Lon to don their space suits. Gary then runs back to the cave to retrieve diamonds and is killed by a rock monster before reaching the ship.

With oxygen flowing and suits secured, the Earth crew makes their way to the ship for lift-off back to Earth. As they prepare to depart, the group faces the final questions and the pull of home.