If you are a newcomer looking to get into the series, or a veteran wanting to revisit the origin of the ZECT War, this deep dive into Episode 1 will explain why this 2006 premiere remains a landmark in Tokusatsu history. The episode opens with a flashback that sets the entire mythology in motion. Seven years before the main plot, a massive object—later identified as the meteor carrying the alien Worms—crashed into Shibuya, Tokyo. The impact was catastrophic, leveling the city and causing a timeline split for the survivors. From this wreckage emerged the Worms: shape-shifting insects capable of mimicking human beings perfectly, down to their memories and emotions.

There is a famous scene in Episode 1 where a ZECT operative attempts to use the —a massive, horned beetle that serves as the transformation device. The Zecter rejects the soldier, flying away. Soldier: "It didn't choose me." Tendou, catching the Zecter effortlessly: "It was waiting for me."

Press play. Cast off. And walk the path of heaven. Lost half a point only because we have to wait until Episode 2 to see his "Rider Kick" in full glory.

In the present day, society lives under the constant fear of the "Unknown" (the public’s name for Worms). The secret organization (Zwei Euro Combat Tactical) fights a shadow war against them, utilizing powerful armored suits known as the Masked Rider System .

The iconic countdown begins: "3... 2... 1..." Tendou: "Cast Off."