Kawai Haruto belongs to a cinema club to realize his dream to make his own movie. But he is losing his passion of the movie because Hina Yusuke, his best friend as well as a good rival, died suddenly last year. One day, he meets Sendo Mahiro. She asks him to make a movie with her. Also she says that she was at the place where Yusuke died, and that he died because of her. On the other hand, Yusuke’s little sister Hina Asuka blames him for killing her brother.

When a young boy called Hiro finds what appears to be a broken lighter in an empty field, it changes his life forever. This lighter is actually the Gold Lightan, a robot that fell to Earth from the Robot Dimension. When called upon to defend the Earth from Ivalda the Great's evil robots, Gold Lightan transforms into a giant super robot, known as the Golden Warrior. Gold Lightan joins forces with Hiro's and his gang, the One Pack Rangers to protect the Earth from the evil schemes of Ivalda the Great and his armored forces.

The movie starts out with Katsuhiko going to the US, with Kasumi and Yusaku seeing him off at Narita. Two years later, Katsuhiko is a professional racer, and comes back to Japan to race (and to marry Kasumi). Yusaku's hobby is photography.