Catherine's Tears
Zechs is doing test runs with Tallgeese to figure out how the new Mobile Suit handles real battle situations. High acceleration and missiles proves to be no match for the suit.
On a surprise attack on a Federation base, OZ soldiers Alex and Muller demolish the place even after it surrendered. They proceed to the Lake Victoria base for resupply, and states they want to show (off) their new skills to their old teacher - Noin. At the base they try and recruit personell for their new demolish mission, but are told that none are still on the base. However, Alex thinks Zechs Merquise is still available.
Zechs and someone analyses the data from the battle in Siberia, and the other guy thinks Heero is unnatural, his stats are way beyond normal human capacity. Meanwhile, Alex and Muller have found Zechs in Tallgeese's hangar, and begin their recruiting campaign by insulting the old MS. Turns out that their afforts were for nothing, Zechs volunteers to join the mission with them as their subordinate.
As the mission begins, Muller reveals that they're only using Zechs and his big suit as a bait. The base attacks the enemy OZ forces, but are surprised by the capacity of Tallgeese that demolishes the base within moments. After Zechs has made the base surrender, Alex and Muller attack it again, and orders Zechs to not interfere. Zechs ends up preventing his OZ forces from attacking the Federation base, and then turn on Alex and Muller, who eventually get killed.
Meanwhile elsewhere, Trowa discovers that OZ is about to launch an operation into space, and decides to attack the nearby base that the circus is visiting. For some reason, he thinks the best idea is to bring his Gundam into the circus tent, and then attack a carrier on the outside as it lifts from the base... Yes, shooting through the roof of the circus tent, and with the audience watching....... After the base is destroyed, Trowa is about to self-destruct when Cathrine shows up in front of his Gundam. Unfortunately, an OZ MS is still active, and attempts to attack Cathrine, whereupon Trowa goes berserk for a while, chopping up the suit. Afterwards, he orders Cathrine to move away, so he can kill himself. Cathrine refuses, and as Trowa opens up the hatch to his Gundam, she jumps in and prompty punches him, after yelling at him first... Trowa ends up not self destructing.
Some time later on, Trowa and Heero leave the circus after Catherine blames Heero for changing Trowa.