 "Dogyuun" takes place in a future where transmission with a police communication center at the planet Dino has ceased.Three pilots were sent for a reconnaissance assignment in order to determine the current situation before one of them, Kyle, is assaulted and killed by a metallic robot from an invading alien race, indicating that the communication center has been overrun by them and held its personnel as hostages.Seeking revenge for the death of their comrade, the two pilots embark on a full counterattack against the aliens with their Sylfers bomber crafts.