Intro. In a world where people trust the hero organization S.P.H.E.R.E., a police support unit that protects cities from disasters and terrorists. No one knows that behind the scenes is a dark laboratory that captures both humans and aliens for experimentation, creating the Kamen Rider system and silencing the truth in exchange for "controlled peace." Humanity's enemies are the alien race Mimics, who are perfect imitators of humans. Silently infiltrating the people and reveals the body of a monster with speeds faster than the eye can see Only Rider can fight. The organization's vanguard is the three-rider unit "Tri-Sphere Operatives," the state's ultimate weapon. With a top secret order—to eliminate the anonymous rogue rider in the database, codenamed Kamen Rider Hourglass. A mischievous high school student who is considered to have no future. is the one chosen by the "Cosmic Hourglass" belt, an hourglass of starlight that controls time. When the system voice sounded, "Time… Shift." His life changed forever. from an ordinary child To the mysterious Rider who cuts the enemy's time. And it's a hunter that even Mimics fear. But in the eyes of the organization... This hero is a threat that must be eliminated.