With data recovered during the previous adventure, the heroes have proof of a deep-culture site in the sun and the coordinates to travel there. What they lack is the technology to dive into the star. Luckily, a member of the Corona Artifact Divers, daredevils who delve into the sun's atmosphere for thrills and profit, has just what the heroes need. However, this genius inventor is in debt to "business people" who have claimed the sun-diving starship to recoup their investments. The characters must venture to the bubble of Verdeon, confront those holding the vessel, and pilot it into the sun. Upon doing so, the heroes find a truly bizarre bubble-city and the key to further solar adventure!