The year is 2020, three days before the opening of the Tokyo Olympics. While she should be studying for her exams, Kokone Morikawa is often dozing off, stuck between reality and a dream world full of fantastic motorized contraptions. But after her father, a talented but mysterious mechanic, is arrested for stealing technology from a powerful corporation, it's up to Kokone and her childhood friend Morio to save him.

Reclusive author Loretta Sage writes about exotic places in her popular adventure novels that feature a handsome cover model named Alan. While on tour promoting her new book with Alan, Loretta gets kidnapped by an eccentric billionaire who hopes she can lead him to an ancient city's lost treasure from her latest story. Determined to prove he can be a hero in real life and not just on the pages of her books, Alan sets off to rescue her.