20 years have passed since Dai Sawamura, also known as the second Shaider, destroyed the clan of Fuuma-Lear. The descendants of the said clan, now known as the Kuuma, have emerged to wreak havoc on an unsuspecting universe. Gallian, a descendant of Dai, has a mission to search for his cousins to form an elite group of space sheriffs known as the Zaido.