Our tale begins with a young girl names Rainy, born on a planet called "Rubius". The planet is well-known throughout the universe for its ten sacred gems of power. Any evil tyrant names King Scythe, attempts to steal the gems for himself. Failing at his attempts, he destroys planet Rubius, hoping to annihilate any competition. Luckily, one Rubian had survived. Rainy. With a helping hand from a man names Niku, the young Rubian is taken to Earth for safety. But . . . would she be safe for long?