In the conclusion to the adventures of Artoo-Detoo and See-Threepio in the Kalarba system, a power core rupture on Hosk forces all life forms to be evacuated, but life forms doesn't include droids! As Olag Greck makes his final stand, Artoo-Detoo and See-Threepio race against time to save the industrial moon... but first they'll have to survive Greck's droid armada!