The "second great world war Parodius" that led the world into a fit of laughter ended more than 50 years ago. Three military organizations: "The Alliance Penta", "Organization Koitsu and Aitsu" and "Alliance Araji" will control each other in secret, and as a result of peace is maintained through this exquisite balance. However, this stability began to alter when a mysterious cat named John Myan Jiro begins to interfere in these relationships. Win the "third great war of the world Parodius" for peace and honor of your country!