To defend against Nightfly O'Notes, invaders from another world, mankind has organized the five-man fighting team "Scar-red Rider XechS." However, one of the Riders, Yosuke, is saddled with a serious problem.
We Riders are the only ones who can fight it.
نحن الفرسان الوحيدون الذين 
.يمكنهم محاربتها
Los Riders somos los únicos
que podemos luchar contra eso.