The Lunar: Eternal Bluegame video game for Sega CD, follows the adventures of Hiro, a young explorer and adventurer who meets Lucia, a visitor from the distant Blue Star, and remains involved in her mission with the target to stop the evil Zophar, a being who wants to destroy the world. During the journey into the world of Lunar, Hiro and Lucia join a cast of secondary characters, including some from the previous title Silver Star Story.