故事背景设定在至高共和国时代末期，一个充满“阴暗秘密与新兴黑暗势力”的世界。受人尊敬的绝地大师索尔（李政宰 饰）同昔日前绝地徒弟奥莎（阿曼德拉·斯坦伯格 饰）深入调查绝地武士接连被杀害的真相，他们要面对的势力比预想中更加险恶，更不知不觉间走入黑暗漩涡之中……

　　We're transported back to the tropical island of Saint Marie, and this time with a new Detective Inspector in place - but will DI Mervin Wilson remain in the job for long? Following the recently cracked case of ‘who shot the Santas?’, along with the revelation that his estranged mother has passed away, Mervin is ready to get back home and leave the island for good. But when a case close to the hearts of those at the station presents itself, is he tempted to extend his stay?　　As Mervin continues to ruffle feathers, the police team pull together to solve some of the island’s most confounding cases yet.