Following the successful implementation of the Sibyl System in Japan, the technology is now being exported to other nations in the hopes of global adoption. To test its efficacy abroad, the war-torn South East Asian Union (SEAUn) introduces the system in the town of Shambala Float to maintain order and peace. However, a faction of anti-Sibyl rebels infiltrates Japan, prompting the Ministry of Welfare's Public Safety Bureau to uncover links to the renegade former Enforcer, Shinya Kougami. Akane Tsunemori, tasked with apprehending him due to their tumultuous history, embarks on a mission to SEAUn. With years passed since their last encounter, their reunion may not unfold as expected.