Mikazuki's group, Tekkadan, has been commissioned to escort Kudelia on an inspection of a halfmetal mine, but suddenly, finds itself under attack by space pirates.
Despite some casualties, Tekkadan has successfully repulsed the space pirates of the Dawn Horizon Corps. It appears, however, that this enemy was just one part of a huge space pirate group.
Deploying all the fighting strength it possibly can, Tekkadan attempts to capture Sandoval Reuters, the leader of the Dawn Horizon Corps, with help from Gjallarhorn's outer lunar orbit joint fleet, Arianrhod.
Lafter and the other Turbines members take their leave of Tekkadan. Meanwhile, at Teiwaz, the organization's number two Jasley Donomikols plans a new maneuver.
Tekkadan has been thwarted in its attempt to rescue Turbines from danger. Orga restrains himself in response to Naze's wishes.
A modest funeral service is held aboard the Saisei. But Jasley has been preparing yet another stratagem.
With the repairs to the Barbatos complete, Tekkadan musters its fighting strength. The members ready their resolve for the confrontation with Jasley.
Gjallarhorn's Earth headquarters has been captured in a coup d'état by young officers. Among them is McGillis, who heads for a facility underneath the headquarters.
The Arianrhod fleet, led by Rustal Elion, attempts to gather all its forces to fight the coup d'état.
After many complications, Tekkadan finally joins the battle against the Arianrhod fleet.
Tekkadan revives and launches an attack, aiming to escape the battlefield. Meanwhile, the fight between McGillis and Gaelio becomes increasingly ferocious.
Tekkadan plans to return to its Martian headquarters and start over. The situation, however, has undergone a dramatic reversal.
Tekkadan is in a difficult predicament. A huge Gjallarhorn force then begins deploying around its Martian headquarters.
Gjallarhorn intends to launch a mopping up operation against Tekkadan as the hour of its commencement is drawing steadily closer.
Gjallarhorn begins its Tekkadan mopping up operation, with Tekkadan's future in question.