Gilles, who operates a money losing garage, teams up with his friends Max, who operates a scrap yard, and lawyer Xavier to open a brothel catering to women. They get the idea from Gilles' secretary Irma, a former prostitute. They are assisted in the implementation by Max's wife Juliette and Sabine who is mad for Gilles. Unfortunately Gilles has fallen for Florence the daughter of the conservative Prime Minister and his wife. When the Prime Minister tries to shut down the brothel Gilles decides to stand against him in the election.
The story revolves around Duke Fleed who is a survivor of the Vega Star, raised by Dr. Umon as his adoptive son, and known as Daisuke Umon on Earth. Years after his arrival, he's faced with the threat of King Vega and his army, who want to conquer the Earth. With his friends Koji and Hikaru (and later his kid sister Maria Grace), Duke decides to fight back using his best weapon, the almighty Grendizer.
Mr. Follavoine plans to supply the French army with chamber pots. In preparation for this lucrative contract, he invites a doctor from the Ministry of War. The business dinner takes a different turn when Mme Follavoine appears, obsessed by their son Toto's constipation.
