Hongo Takeshi awakens to discover he has been transformed into a grasshopper-hybrid cyborg. Becoming the Masked Rider, he must fight the mysterious evil organization SHOCKER to protect all of mankind.

From the mind behind Evangelion comes a hit larger than life. When a massive, gilled monster emerges from the deep and tears through the city, the government scrambles to save its citizens. A rag-tag team of volunteers cuts through a web of red tape to uncover the monster's weakness and its mysterious ties to a foreign superpower. But time is not on their side - the greatest catastrophe to ever befall the world is about to evolve right before their very eyes.