The first part of this animated series, Once Upon a Time... Space, deals with epic battles in the Andromeda galaxy.

In the second part of this sci-fi cartoon series, the Consul and General of Cassiopeia begin planning their conspiracy against the Galactic Confederation of Omega.

Pierrot and his copilot are sent on an observation mission to Andromeda. They stop by an intriguing Green Planet with a wonderful spongy surface.

Pierrot wakes up on a beautiful and verdant planet, whose king tells him of the damage done by some evil-minded visitors long ago.

After waiting for hours for his troops to return, the Consul learns that they are under attack. He sends his deputy to investigate the situation.

The King of the Forest recounts the atrocities inflicted on the Green Planet by humans long ago, as well as how its inhabitants decided to stop the massacre.

Pierrot's adventure on the Green Planet continues. In this episode, the Omega Confederation foils the General's plans to invade this beautiful and peaceful planet.