SIDE6 is immersed in a peaceful and harmonious atmosphere. It is far away from the battlefield and almost no war has ever happened here. There are not many federal troops stationed here. This does not make the young Al happy, because he is a military fan and eager to see the fierce battle scene. One day, when Al was communicating with his friends, a commotion broke out in the colony. This was caused by a conflict between a small reconnaissance unit of Zeon and the Federation. Soon, a wounded Zack (modified) flew over Al and fell on the lawn in the forest not far from him. The shot-down Zeon recruit Barney used his military rank badge to exchange for Al's camera magnetic card, which recorded the MS assembly screen that Al got from the factory of the Federation. In addition, there was the figure of Chris, a red-haired girl who moved from Earth a few days ago. The intelligence obtained by Barney attracted the attention of the Zeon army, and they immediately formed an assault team to carry out the task of destroying the Gundam. So, Barney's team, relying on the chaos of a small-scale battle, sneaked into SIDE6 again. In the space colony, Barney met Al again. Al, a young man who wanted to become a MS driver, volunteered to scout the location of the secret base of the Federation Army for the Zeon Assault Team, and became friends with the young man Barney who was monitoring him. One day, Barney met Chris under Al's window, which brought some interest to Barney's surveillance mission. At the same time, in the secret warehouse of the Assault Team, a new MS for Gundam, Campoma, was being assembled, and it was planned to complete the task of destroying Alex before Christmas. After all preparations were completed, the operation to destroy Gundam was launched. Campoma, driven by a veteran of Zeon, defeated the stationed federal troops and cooperated with the Assault Team to quickly reach the secret factory where Alex was parked. Alex NT-1 rushed to fight and defeated Campoma with its performance advantage. At this point, the Zeon Assault Team failed in the operation, and all members of the team except Barney were killed in the battle. After the failure of the Zeon Assault Team, Barney, the only survivor of the team, received instructions to evacuate SIDE6 immediately. Because the Zeon Army has no chance to organize forces to destroy the Gundam, they plan to use nuclear bombs to destroy the entire space colony before Christmas Eve. After Barney learned the news, he asked Al to immediately notify his family and Chris to leave the colony as soon as possible, but was opposed by Al. Al hoped that Barney, the excellent pilot in his mind, could defeat Alex and save the fate of the colony, so Barney had to leave alone. The police could not believe Al's alarm and ignored it. At the same time, the Zeon Army's attack ship carrying nuclear warheads had left the mothership. Al was almost desperate in the face of his friends and family. At this moment at the airport, Barney was hesitant. In the end, he made up his mind to issue a final challenge to Alex for Al and his beloved Chris, as well as the people of the colony. With the help of Al, he repaired Zack, who was shot down during the first attack on SIDE6, and attacked NT-1 with his only weapon, the energy axe. At the same time, Al learned from his father that the Zeon Army would sign an end-of-war agreement in a few days. He ran to the place where Barney was fighting, but the beam sword of the NT-1, which was shattered in front of him, had pierced Zack's cockpit. The beautiful red hair of the federal pilot rescued from the cockpit of the NT-1 by the paramedics made Al stunned...