Den Ace is a superhero who has defended Japan from space menaces for thirty-five years. When things seem to have calmed down, strange events prompt him to get back to action.

• River Top
• Minoru Kawasaki
• Hollywood Zakoshisyoh
• Satoshi Kobayashi
• Jun Tablet
• Chikamaro
• Reijirô Katô
• Yoichi Nangoo
• Kenryu Hari