Earth-1991... a world very different from ours. A world where heroes and villains come in many forms. It is said that the fabled thief Arsene Lupin left behind his greatest treasures: the Lupin Collection. The Lupin Collection hold the power to bring miracles or destruction. Many wish to claim their power but it has gathered two different teams.

The Lupinrangers, thieving Power Rangers who all have a reason to fight. They fight against anyone that gets in their way, ranging from evil organizations to rival Rangers.

The Patrangers, Power Rangers that also double as gumshoe ACME agents. They fight in the name of justice but are willing to do what is needed to fight a bigger threat.

This is the story of how two Ranger teams fight not only against each other but also against an evil organization: the Villains International League of Evil. Who will be the victor? The Lupins? Or the Patrens? Which side will you choose.