OZ plans to transport the new Taurus mobile suits to their base in Siberia. However, Lady Une sets an elaborate trap there to lure and destroy the Gundams. Duo and Quatre arrive to attack the base's ground transportation route (which is revealed to be a decoy), while Heero and Trowa attack the base's aerial route. During the battle, Zechs uses the Tallgeese to duel Heero's Wing Gundam. However, Une interrupts this when she threatens to destroy the space colonies using the missiles of Space Fortress Barge unless the Gundam pilots surrender. Doctor J responds and agrees to surrender, but refuses to hand over the Gundams. In response to this, Heero self-detonates his Gundam; seemingly killing himself in the process. The remaining Gundams are forced to retreat.