A "Super Robot" anime series by the animation studio Knack Productions. A cruel alien race known as the Blasters systematically invade other planets to exploit their natural resources. The humanoid alien woman Maya survives the destruction of her home-world and flees away from the Blasters. Her ship crash-lands on planet Earth, and she decides to settle there. Maya eventually marries a human scientist. She gives birth to a human-alien hybrid, named Kantaro. Several years later, the Blasters invade Earth. Kantaro defends the planet as the operator of the sentient robot Astroganger.
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