Sakurazaki Suzuo is a below average college student at a magnet school. Coming from the country he is trying to find a part-time job in the big city to pay his rent. Due to the economic slump this turns out to be a lot more difficult than he had imagined.  After saving a cat from traffic, seeing hero potential in Suzuo, an alien girl Tanpopo tries to scout him for a job as tester for the toy company, Otankonasu. Suzuo initially declines this offer. But when the A-class hardcore criminal alien, Doctor Marron Flower destroys Suzuo's neighbourhood, thus also destroying any local part-time job opportunity, Suzuo becomes desperate enough to accept Tanpopo's job offer. She puts a mysterious toy-like belt on Suzuo, that actually transforms into a powered suit, created to fight criminal aliens!  And so the utterly confused Suzuo turns into Dokkoida, ready to fight crime for the Galaxy Federation Police and save the Universe... or maybe not so much.