Continuing the adventures of the "Kamen Rider" genre. Minami Kotaro is chosen by Golgom to be the Century King along with his best friend. Kotaro escapes and transforms into the 11th Kamen Rider, Kamen Rider Black! Unfortunately, his best friend never got away and slowly became "Shadowomoon." Kotaro battles Golgom and "Shadowmoon" for 51 in-your-face-action-packed episodes.