A cute AI detective and a boy who loves mysteries; the unique duo solves difficult cases one after another! Father, a trainer of artificial intelligence, died a mysterious death in a locked room. His son, Tasuku, is the "detective" AI left behind by his father, he meets Ai, and together they chase after the real murderer. Together, they discover an unexpected conspiracy, Ai's twin, the "criminal" AI, and the battle of deduction unfolds...!

Tasuku's father, a researcher in the field of Artificial Intelligence, was the victim of a mysterious death, leaving behind him AI (Artificial Intelligence) twins: a detective and a criminal. With the help of the detective, Ai, Tasuku decides to look for his father's killer. However, during his quest he discovers that the criminal AI, Ia, has been robbed by the terrorist organization Octa-Core, who uses her to commit crimes. Difficult cases assail him one after another, and in the process, he discovers the truth behind his mother's death as well as Ia's goal.