Shin Kidou Senki Gundam Wing: Endless Waltz Special

The world is at peace at the end of these two works' respective prequels but there is still lingering conflict. In Lelouch of the Re;surrection, there are gates untouched by Charles and remnants from the Geass Order using their abilities to cause conflict. The antagonist, Shamna, may possibly finish what Charles started. Whereas in Endless Waltz, the heir to the defeated antagonist Treize Khushrenada, Mariemeia, resurrects the original plan for Operation Meteor, threatening to drop colonies on to Earth. Both of these movies from Sunrise discuss a world of peace, and if it is a true peace when there are soldiers left without purpose (followers of Mariemeia like Chang in Endless Waltz, and the Kingdom of Zhilkstan in Lelouch of the Re;surrection, whose largest export is warriors). read more 

These two theatrical shows are the definite conclusion to their show's ending solidifying the quality of the two mega hit mecha shows of the 90s that will forever be remembered by fans hardcore and newbie alike The fate of the war that took tolls on years to come will finally reach to it's conclusion as Wing Zero and Eva 01 will go all out with the blast one more time  

Both movies take place after the main storyline and their plots are similar in a way where a new enemy emerges as well as where they show the preview at the end of the final episode.