Kageyama (Daichi Watanabe), Iizuka (Fuma Kikuchi), and Malik (Ike Nwala) live together in a share house. They were hired as live-in part-time workers at the Love Science Research Institute run by Sachi (Anna Ishii), a graduate student who studies love.
The story begins when the Lupinrangers, Kairi, Touma, and Umika, are kidnapped by someone mysterious. The Patrangers are then tasked with an Abduction Case to find the missing thieves, where they run into the Kyuranger team as they pass through space. Just who exactly kidnapped them? And why did the 12 Kyurangers return to space?
The Lupin Collection, a vast ensemble of dangerous items acquired by the legendary gentleman thief Arsène Lupin, is stolen by an interdimensional crime syndicate known as the Ganglars. However, they receive opposition from two Super Sentai teams: the Lupinrangers, who aim to steal back the collection to live up their namesake's reputation and save those they have lost, and the Patrangers, who are tasked with upholding justice by retrieving the collection and taking down the Gangler.