Together, a tough Japanese private investigator and the daughter of a scientist embark on a journey to Australia to uncover the enigma surrounding a self-aware biochip. Eiko Hirgure's father and the biochip vanish after a covert research initiative goes wrong. As they progress, they discover a convoluted web of clues with several unanswered questions. Who is the anonymous individual that contacts detective Happo? Why is a malevolent group monitoring their every move? And, what role does a mermaid play in this saga?