Shukebeta drives a brand new pentagonal flying saucer to the universe for adventure, but when they return to Earth, an accident occurs and they travel to the Cube City ten years later. The mice's airline has been destroyed, and a group of mice who call themselves "The Extreme Pirates" are occupying the airport and doing all kinds of bad things! In order to rebuild their home, Shukebeta joins the Extreme Pirates and launches an undercover operation! How should the strong and brave Shukebeta deal with it this time?