Fate/Zero 2nd Season

Synopsis

As Archer and Berserker continue to battle in the sky, Saber and Rider are forced to retreat from Caster's demon to rethink their strategy. Rider proposes transporting the demon inside of Ionian Hetairoi, where his armies will hold it off as long as they can while Saber and Lancer find a way to finally destroy it. Kiritsugu calls and explains to Waver how they will defeat the demon and tells him to inform Lancer about Saber's Noble Phantasm. Lancer realizes what Kiritsugu means and destroys his Gae Buidhe to allow Saber's wound to heal and fully use her Noble Phantasm. Tokiomi defeats Kariya by burning him with a blast of fire. He falls from the building, and is later found by Kirei, who is on the verge of killing him but decides to heal him instead. Berserker destroys Archer's Vimana, but is drawn by the unveiling of Saber's sword and begins attacking her instead. Lancer and Archer attack him and destroy his jet. With the coast clear, Kiritsugu fires a flare gun to signal to Waver where Rider should transport the demon. With the demon in position, Saber uses her Noble Phantasm Excalibur to finally destroy Caster and the demon while the former has a vision of Jeanne before his death. With the threat over, Rider and Archer discuss whether Saber's life as king was incredible or tragic before both leave, with Rider hoping to duel Archer in the future and Archer now smitten with Saber.

(Source: Wikipedia)