Gundam 40th Anniversary Celebration: Chars Counterattack

Amuro and Char, two best mobile suit (robotic weapons) pilots who fought together against Titans after the Zeon's independency war, must face each other in a fateful duel where the Neo Zeon, led by Char, attempts to drop a gigantic meteor and its nuclear weapons to Earth in order to cause Nuclear Winter to wipe out the Earth inhabitants.