The Imperial attack on the Alliance rear support base continues. Despite inflicting heavy losses on the Alliance forces, the Imperial forces are unable to break through the Alliance defensive line easily due to unfavourable geography. Meanwhile, the 5th Fleet finally arrives in the vicinity of Van-Fleet 4-2, only to find itself engaging with the main Imperial fleet in Van-Fleet Starzone. Soon, the remaining Alliance fleets also converge outside Van-Fleet 4-2, and the battle turns into a chaotic mêlée as both Alliance and Imperial warships try to engage each other in the limited space around Van-Fleet 4-2.
Prequel to the original series, focusing on Reinhard and his steps up the chain of command in the Galactic Empire. Also focusing on the FPA's Yang Wen-li. A chronicle on how he earned the title "The Hero of El Facile" and his handling of assignments he received after the historic event. Spiral Labyrinth also continues with the background of Reinhard and Kircheis where the first Gaiden left off.
