Plot:
On Opheusius, Kleolana, the woman leader of her world, demands that Rocky Jones, Space Ranger, and his crew leave her planet or else. Rocky isn't able to discuss anything with Madame Tyrannomaxima.

Captain Kirk doesn't have anything on me...Rocky Jones: Space RAnger!!!
Elsewhere, on the space station, Vena, Professor Newton have calculated that the approaching Gypsy moons will soon destroy the space station and the atmosphere chain will numerous worlds.
The rocket is able to evacuate the station.

Nice to know that Sputnik wasn't the pinnacle of 1950s space technology...
They try to push the station out of the atmosphere and even try radioing Bor-el to no avail.
On the Gypsy Moon, Bosito, Bor-el is waiting so he can meet his friends Rocky Jones, etc, again...

My son, Kal-el, yuo will be sent to the planet Earth, where the yellow sun will give you strength greater than them.
Rocky finally gets in contact with Bor-el and informs him of the the moon will collide with Opheusius. Apparently, they can't radio most of those on Opheusius since the leader has banned all radio communications to keep them from realizing
how terrible a leader Kleolana is.
Rocky and Winky try to send a message to Opheusisus about Bosito crashing. They plan on evacuating Bosito and warning Opheusius, and attempt to land.
Addislan reported his wife, Trinka in for being a member of the underground. Kleolana tries to convince Trinka to snitch on the underground. Rocky and Winky reach the city and tel Kleolana about the impending moon crash. Kleolana
doesn't want anyone to know. She traps Rocky and Winky and starts to gas them. Being the megolomaniacal world leader she is, Kleoloana decides to try to blow Bositio off a collision course with them.
Addislan tells Trinka about Kleolana's plane. Trinka is able to free Rocky and Winky. Let the Star Trek Captain Kirk fighting ensue. Rocky, Winky, and Trinka head for the rocket to stop Kleolana from blowing up Bosito.
Addislan hears Trinka and prevents Kleolana from blowing up Bosito.

One thing I can't stand planetary tyrants in the passenger seat...
Everyone reaches Bosito, Bor-el is evacuating his people and thinks that blowing up the moon to save Opheusius is understandable with it having so many more people that Bosito.
The bombardments starts but to no avail. Opheusius will have to be evacuated. Landing there to start the evaucations, Kleolana's goons climb into the rocket. Let the Star Trek Captain Kirk fighting ensue. Trinka is able to calm everyone down. The evacuation fleet arrives and begins landing.

Special effects that aren't quite on par with Star Wars.
Rocky, Vena, nad hte rest take Kleolana away before the moons collide. Kleolana realizes her people matter more than the
land does.