From the introduction:
From the safety of the Liberated Land to the dark uncertainties of the Dragon Lands, this adventure continues a dangerous mission for the OverLord of Many Names. He who hates all that is evil has sent a party of LightRaiders on a perilous journey to the Misty Wood Lake in Fantasia Shieling. They must traverse a series of islands in this lake by finding a "MoonBridge" that connects each island to the next on in the dead of night.
Soon after LightRaiders set foot on Skeleton Island, they see a girl being led captive by a skeleton. They must decide whether to help or let evil takes its course. The LightRaiders's main goal, of course, is to reach the other end of this island and find the MoonBridge to Anamos' Isle. They cannot get there, however, without traversing a forlorn marsh full of danger and depressing sights. They must cling to their hope in the OverLord if they are to find the right path and reach the next MoonBrige.