Three young children are fascinated by space. One night they saw a flying object crashing into the forest. Ruru, the king of the children of the kingdom of the space is on board. Ruru invites the three musketeers in his realm of space. During this journey, a terrible battle began in space to destroy the enemy in the middle of a meteor shower.

In the 41st century, Queen Karen finds her planet will soon be devasted. As a solution, she plans to conquer and migrate into 20th century Earth by creating a powerful time machine using special substances called ‘Dianum12’. In order to stop her, Professor Judeen and his granddaughter Fera asks our Starland Trio to join forces and fight back the Queen.