The story revolves around a 14 year old boy called Justin who dreams of being an adventurer. One day when exploring the ancient Sult Ruins, the spirit stone left to him by his late father opens up a room which he then enters with his friend Sue and her pet Puffy. Inside, he meets a mysterious woman named Liete who tells him that he must travel far to ancient city of Alent. Meanwhile, a military called the Garlyle Forces, lead by General Baal, are also desperately trying to find Alent. While Justin, Sue and Puffy are travelling, they are joined by party members such as the famous adventurer Feena and a mighty warrior named Gadwin.
More party members join in disc 2, such as the obnoxious rapscallion Rapp, the Lainian bad-ass Milda, the wise rabbit Guido and Liete herself. Party members come and go but Garlyle proves to be a recurring obstacle in Justin's quest. Colonel Mullen, Lieutenant Leen and the sergeants Nana, Saki & Mio included. Baal becomes the monster known as Gaia and only Justin has the power to stop him. Other characters include Justin's chef mother Lilly, elderly adventurer Java, the creepy Adventurer Society President Pakon, his bodyguard Master Chang, young horned Rem, impressionable child Nicky and many more.
