When an image-conscious wild child takes a strange new drug at a party, she undergoes a shocking transformation. Desperate to reverse the effects of the drug, she is horrified to discover that she has become the key to saving the human race.

突然，受到从时空门出现的敌人袭击的宝太郎及其同伴们。被迫陷入苦战之中，察觉到敌人从未来传送过来…！为了守护现在与未来，宝太郎与凛音穿越时空前往荒废的未来。在那里的是昔日从困境中拯救宝太郎等人，掌握着故事的关键，“20年后的宝太郎”，假面骑士歌查德黎明骑士的身姿。