January 1, 796 S.C. / 487 I.C.: in the Astarte star system, a 20 000 spaceships Imperial fleet under Reinhard von Lohengramm's command is about to be cornered by three Alliance fleets of 13 000 spaceships each. Against the advice of his subordinates, Reinhard decides to strike first in order to defeat each fleet before they can join. The Allied commanders, trusting the overall odds of 2 to 1, don't anticipate this and rebuff Yang Wen-li's advice to quickly regroup their forces.

May, 14, 796 S.C. / 487 I.C.: a fake imperial spaceship docks into Iserlohn. Walter von Schenkopp, commander of the Rosen Ritter, pretends to have important information and takes control of the center of command. The Iserlohn fleet comes back, only to be destroyed by the fortress' main weapon, the "Thor's Hammer". The fall of Iserlohn dramatically changes the strategic balance: Yang hopes it will lead to a peace treaty. Back in Heinessen, he wants to resign, but is promoted to vice-admiral instead.

Paul von Oberstein, chief of staff of the Iserlohn fleet, is in trouble. He saw through Yang's plan, but his commander didn't listen to him, and he fled before the destruction of the fleet. The three chiefs of the Imperial fleet resign, but want to make him responsible of the defeat. Oberstein meets Reinhard and explains how, like him, he hates the high nobles and the Goldenbaum dynasty, and offer his help. Reinhard agrees and obtains his pardon by advising the Emperor to refuse the chiefs' resignations.