In 2040, Jonathan has become a private investigator on Earth in Old Los Angeles. He is visited by his former wife Lorraine (Chiyoko Kawashima), who remarried while he was presumed dead. Lorraine asks for Jonathan's help in solving the disappearance of her husband, Kenzo Hojo; the only clues are a torn leaf, a set of capsules, and the word "Plato". Jonathan is reluctant to take her case at first, but after Lorraine leaves his office, she is murdered by a man in a black motorcycle suit. After failing to catch the culprit, Jonathan decides to fulfil Lorraine's final request and travels to Beyond, where he is reunited with his former LAPD partner, BCPD vice department chief Ed Brown (Shōzō Iizuka), who agrees to help Jonathan investigate the circumstances surrounding Hojo's disappearance and Lorraine's murder along with BCPD detective Meryl Silverburgh (Kyoko Terase).