Hastily, the remaining humans of Earth revive the ancient DonPachi Corps to fight Hibachi's army of mechanized people. Believing that the only way to save humankind is to have them adopt a better form, she begins a war to force all humans on Earth to become machines. Hibachi now controls a computer system governing from deep within the technologically advanced City of Ideal, a paradise where humans live in harmony with nature. Prior to the beginning of the game, Hina, now known as Hibachi, was mysteriously reactivated and destroyed the laboratory, and the incident was covered up. When Hina decided that the ultimate answer to humanity's problems was to eliminate the human person, the project was immediately shut down and the Element Dolls were frozen. In the past, the Element Doll Electronics Laboratory was designing the ultimate Element Doll to assist the human species, dubbed "Project Haruuara." The first units produced were Extra Z-001 "Hina" and Extra Z-002 "Saya." Though they lived as sisters and were taught the importance of being close with humans, they were trained as enemies in combat. Many years have passed since the events depicted in previous DoDonPachi games.
If every bee medal is collected in at least three stages and the player does not die more than once during the game, Hibachi will appear. Following the defeat of stage 5 boss Taisabachi, the giant mechanical bee, a more difficult fight may follow if requirements are met. There are five stages, each with eight bee medals to collect and a boss at the end. Unlike past entries in the DoDonPachi series, there is no second loop in this game. The "get point" counter beside the chain meter must exceed 21,474,836, at which point the score will begin to increase at an unintended fast rate. The arcade release has an "overflow glitch" that, when triggered, results in scores that are otherwise impossible. The chain meter is also more easily kept above zero by using the laser.
The biggest basic difference in scoring is that the chain hit counter will not reset immediately when the chain meter empties the counter will instead drop by 25% and decrease very quickly until the chain continues. This game's score and hyper mechanics are highly similar to those of DaiOuJou.