The droids' new master, Mungo Boabab, plans to open up a new trade route to the Roon system and save his father's Merchant Fleet from financial ruin. While trailing the Rainbow comets over the planet Manga, his ship, Caravel, is high jacked by a tractor beam from the new Ambu light-station in the Cloak of Sith. Once aboard the station, Governor Koong mistakes Mungo for an emissary from Imperial Admiral Screed (an old enemy of Baobab). Koong had invited the Admiral to take a look at his illegal ware, including Mupple delicacies, the valuable explosive Nurgon 14, and the illusive Roonstones.

Mungo is about return to Manda when Auren presents him with a Roonstone. She leads him to Old Ogger, an old hermit living in a crashed freighter. Ogger is none other than Mungo's long lost uncle, who entrusts Mungo with his kit bag filled with six bags of Roonstones and plenty of clues to find their source. Hot on their trail, Governor Koong and Admiral Screed capture Mungo and friends and put them on a ship to Koong Island.