At the beginning of the twentieth century, a bustling city in Kansas suddenly disappeared, and with it ten thousand Black Americans along with people from other races who came to this city seeking refuge from the racial tensions of the time. The city was called Astra. Teleported to another planet in space, the people created a utopian society free from racial prejudice. Now, over a century later, the city is under siege by a threat that could wipe out their entire civilization. Their only hope is a teenager named Mon'Tel Zumi, who has been imbued with the power of an ancient god...The Mighty O-Gun! Can this new savior and defender of Astra stop this menace, or is this the beginning of an even greater threat?