2199 AD. After acquiring a "Cosmo Reverse System" at its destination, Iscandar, Yamato attempted to leave behind the Large Magellanic Cloud galaxy. However, at the border of the Large Magellanic Cloud, it comes across a mystery gang. The crew learns that the gang is known as "Gatlantis," and that its leader is the Gutaba expeditionary force commander known as "Goran Dagaamu of Thunder," who demands Yamato be given over to him. Yamato, eager to reach Earth, flees the battle. Yamato, on the other hand, is targeted with a destructive beam weapon known as the "Flame Direct Attack Cannon," which can go through space. Yamato was able to withdraw, but it became disoriented and ended up in an oddly colored irregular dimension. The team chooses