At night, near a tranquil forest and lake, an enigmatic spaceship descended onto the water's surface. The individuals who exited that ship abducted Professor Katou, along with his family. Yuuji, the professor's second son and an American football player, was in the midst of a game when this occurred, oblivious to what had transpired.
Mark, Dickey, Franco, and Yuri were four young psychics who had been training at a clandestine base. They witnessed the previous evening's events and deemed them an extraterrestrial invasion. Convinced that their only recourse was to utilize Baratack, the transforming robot, they employed their psychic abilities to kidnap Yuuji.
Baratack could only move by combining the powers of all five individuals acting as one. When they exclaimed "Pentagoras Unite!", Baratack materialized. Enraged, Yuuji was consumed with a fierce desire to vanquish the Golteus reptile horde.