Tập 1: Điều tra vụ rơi đáng ngờ của Leon Papas tại Làng Isidoros dẫn đến những bí mật về kho báu cổ xưa.

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A former mercenary soldier named Leon Papas suspiciously falls to his death off a cliff in Isidoros Village. A visiting lecturer named Taichi Hiraga-Keaton learns that he received a call from insurance market Lloyd's of London, and he travels to the Dodecanese in order to investigate Papas's death. Papas had a girlfriend named Sofia, but his beneficiary is a shady art dealer named Ox Bayer. At the cliff, Keaton crosses paths with Bayer before meeting Sofia and introduces himself as an insurance investigator. Sofia takes Keaton to her house, where she recounts that Papas started collecting ancient underwater relics when he returned from the Western Sahara War. However, Papas was exhorted to give up the relics to Bayer. When Papas and Bayer were a part of the Polisario Front, Papas was forced to destroy the Capitoline Temple at Volubilis, where seven men lost their lives. Realizing that Bayer is after ancient treasure that Papas had salvaged but never relinquished, Keaton takes Sofia with him in order to escape Bayer's gunfire. After remembering Keaton as his former survival training instructor, Bayer is defeated by Keaton. Sofia reveals that Papas refused to give up the rare coins of Ithaca, which led Bayer to push Papas off the cliff. The coins depict the profile of Ulysses, who took ten years before reaching Ithaca and fell in love with a woman there. Sofia gives one coin to Keaton out of gratitude before he takes his leave. (Source: Wikipedia)