and Nao, two brothers who pilot a vehicle to do battle against the army. When Run tries to save Nao from falling into a volcanic pit, Ultraman Zero arrives and notices the situation the two are in. The bracelet proved to be useful as the suns in that universe are incapable of recharging Ultra beings. As a result, Ultraman Zero uses Run's body as his host and shortly after joining, Zero easily takes out the Legionoids. However, in doing so Ultraman Zero is forced to assume the identity of Nao's brother, Run to both keep the heavily wounded Run alive as well as to conserve energy. After greeting Nao and telling him of the situation, Zero (as Run) learns that Belial is harvesting the universe for Emeralds, which can be converted into raw energy. Belial is planning on using mass quantities of the emeralds' power in his conquest of the universe. Nao believes that an artifact known as the Shield of Baradhi is the only thing that can stop Kaiser Belial. Shortly after the truth is realized, the Legionoids attack Run and Nao again but are stopped after the two brothers stow away on an unknown vessel that blasts off into space. Upon investigating, Run and Nao meet the Princess of Esmeralda, Emerana. They also learn that the ship they are flying on is sentient and is called the Star Corvette Jean-bird, a spaceship with artificial intelligence that is passed down through the planet's royal family. After being spared from Jean-bird's memory wiping process. Run and Nao make quick friends with Princess Emerana and after Run reveals his identity as Ultraman Zero, the trio and Jean-bird agree to stop Kaiser Belial's conquest by searching for the mythical Shield of Baradhi. Along their way, the heroes meet the Pirates of Flames. A wily crew of hostile pirates that sail on board their ship the Advant Garde throughout a stellar object known as the Space Nitromethane Sea. With them is their more hot-tempered and feisty bodyguard, Glenfire. At first identifying the Jean-bird with hostility, Run becomes Ultraman Zero for the first time to try and reason with the crew of pirates. Shortly after, Glenfire and Ultraman Zero battle to prove Zero's innocence, with the fight ending in a standstill and Zero gaining the pirates' and Glenfire's trust. Suddenly the crew are attacked by Kaiser Belial's squadron of Legionoids, lead of one of