In the stratified society of Amoi, where one's worth is determined by hair color, the powerful AI Jupiter and its elite Blondies reign over Tanagura, while the 'mongrels' with darker hair eke out an existence in Midas and Ceres. Riki, a former gang leader from Ceres, vanished after a fateful encounter with the Blondie Iason Mink, only to resurface after three years as Iason's captive. Enduring humiliation and manipulation in Tanagura, Riki's return sparks hope in his old gang, Bison. Yet, betrayal looms large as Riki faces a perilous gamble where trust is a luxury he cannot afford.