A catastrophic nuclear war reduced the world to a radioactive wasteland and forced her and other humans to live deep underground. But, this doesn’t bring Airi or her friends down. As they explore aboveground, they make shocking discoveries not taught in school.
After a chance encounter with famed poet Baudelaire, Cocteau discovers that Baudelaire not only writes poetry but also uses it to fight spirits from the Lethe Valley. Baudelaire, sensing Cocteau’s powers, decides to take him under his wing.