Noboru is a high school student who isn't popular at all. He looks up to senior student Miyazaki who is one of the most popular guys at school. Miyazaki has two girlfriends: Momose and Tetsuko. Momose and Tetsuko have totally different personalities. Momose is bright and Tetsuko is a popular student from a wealthy family. One day, Miyazaki is caught with Momose. To keep his relationship with Tetsuko, Miyazaki asks Noboru and Momose to pretend they are dating. They both agree due to their affections for Miyazaki. Noboru and Momose begin to act like a couple in front others and soon Noboru begins to develop feelings for Momose, who is still in love with Miyazaki.
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.