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.

Hitto Tamaga, an 11-year-old boy, lives in some town in Japan. He is a very unfortunate boy, whose only asset is brightness. He lives only with his father who is a Bedaman researcher, but he left home several months ago, and he's been missing since then. He is living alone in a hut built on a relative’s land. Nobody celebrates his 11th birthday...except his cousin Nana who lives in the same land. One day, Hitto receives a present from the lost father, and he is very grad to know that his father remembers his birthday. It is “Crash Bedaman” that he longed for. After he puts them together to complete Crash Bedaman, he brings it to Bee Park, or a battle field of Beedaman. A battle there shows him a new way he should go. There is a message from his father with the present. “Overcome the difficulties”. Putting this word in his mind, he beats the enemies one after another with his Bedaman. With the encounter of partners and rivals, the mystery of Bedaman, a shadow organization, and the reason of the missing of his father gradually come to light. Defeating various obstacles in his way, he’s growing up.

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.