研究出人工重力装置CX程式的大道寺博士被死神博士追杀。原来,死神博士一心利用CX程式改变地球地轴,将日本列岛沉入海底。这次,本乡和一文字两位假面骑士再次联手对抗邪恶的地狱组织……。A man suddenly attacks a family event at East Coast Park, driving into the crowd recklessly and then exits the vehicle, slashing whoever comes into his sight. After experiencing this traumatic event, the survivors face immense challenges in rebuilding their life.。