第1話: IPOメンバーがBig Fireから盗まれたShizuma Driveを回収し、Daisaku Kusamaを巻き込んだ争いが勃発する

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A ragtag group known as the "International Police Organization", formed by members across the globe, comes into the possession of an attache case which was owned by the corporation known as "Big Fire". Inside is an abnormal looking "Shizuma Drive", the main power source which is being widely used in this futuristic world. "Big Fire" is not at all pleased that this unique Shizuma Drive has gone missing, and decides to track it down, attacking the members of the IPO. However, the International Police Organization have a way of fighting back, and it comes in the form of a boy named Daisaku Kusama, who is able to control a robot known as Giant Robo.