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The story will center on Sabrina, a princess of the Attakaino Kingdom who looks exactly like Lemon Giboshi. She is kidnapped when she visits Japan, and Ryotsu rescues her and shows her around Shitamachi before more trouble breaks out.
The Kameari Park police box officers go on vacation in Hawaii, but after Ryotsu sees a childhood friend who was supposedly dead for the past ten years he & the Katsushika Police Force become involved in a terrorist's plan to use a giant UFO-shaped object to create tornadoes that can rip Tokyo to shreds.