The evil tyrant Greedy has arisen to control a solar system full of sentient beings. He has corrupted the leaders of each world and thereby enslaved the entire populace. He has also sent his minions in the disguise of planet natives into the worlds to enforce his rule.
A lush forest planet, the last planet in the tyrants agenda manages to send a call of help to the solar systems little ancient hero before being over run. However, Greedy has even managed to remove the great hero. Yet, he did not count on the interference of the hero's sun, Ristar.

Description from MobyGames