After the destruction of their homeworld, the survivors of the planet Barm head towards Earth with the goal of negotiating the purchase of land to emigrate to. Unfortunately, during the negotiations, the Barmian's leader, Rion, is assassinated by his second in command, Olban, and the delegation from Earth is framed for the murder. In the ensuing chaos, Dr. Isamu Ryuuzaki of the Earth delegation is shot and killed.
Shortly after the disastrous end of the talks, the Barmians begin a campaign of terror against Earth, lead by Admiral Richter theRion's son, ofAdmiral RionRichter, who deploys a variety of "Mecha Soldiers" against the planet's defenses. The only thing standing between the Earthlings and annihilation is the transforming, kung fu-using super robot, Daimos and its pilot, Kazuya Ryuuzaki. EventuallyBut that changes when he fellmeets and falls in love with a mysterious nursegirl named Erika, whomwho unknowturns out to everyonebe thatRichter's shesister. isOver athe Barmiancourse princessof their struggles to reunite, AdmiralKazuya Richterand Erika each learn that the other's sisterpeople are not all evil... and that their own people are not all good.
