Fate/Zero - Season 1 (2011)

Saber and Lancer face each other to a death battle while their Masters keep themselves hidden. Other Masters and Servants have been watching the whole fight from the very beginning. Soon the fight reaches its climax.

Rider suddenly appears just as the battle with Lancer reaches its climax, much to Saber's consternation. Undeterred, Rider calls out to those observing the fight from the shadows... but it seems he's not the only heroic spirit drawn in by the battle.

A car screams down the moonlit streets of Fuyuki City, with a very happy-go-lucky Irisviel behind the wheel and a slightly unnerved Saber sitting next to her. The evening takes a bad turn when a mysterious shadow darts in front of them.

The rules are altered by the caretaker due to an emergency situation created due to Caster's unethical abuses. The battle between Caster vs other Servants keeps taking interesting turns.

Battle rages throughout Einzbern Castle: Kayneth's magical mercury sphere versus Kiritsugu's formidable gun arsenal, Saber and Lancer join forces against Caster in the forest, and Irisviel detects a new enemy as she and Maiya make their escape.

Kiritsugu and company are wrapping up after the assault on their castle, and the Einzbern Master decides to ignore Saber's desire to pursue Caster, instead leaving to finish off Kayneth. But Kayneth awakens to find himself bandaged and strapped to a bed.

The mystery of the mass kidnappings in Fuyuki remains unsolved, with more kids disappearing daily. When Tohsaka Rin can't get in touch with her friend Kotone, she braves the darkness and enters the city on her own to search for her.

Rider and Waver, unexpectedly arrive at Einzbern Castle. Rider declares his intention to have a peaceful discussion with her and Archer on the subject of kingship and the wishes they want the grail to grant.

Hidden in a Fuyuki hotel, Kiritsugu tries plan his next move, but is still at a loss regarding Kirei's motives. Elsewhere, Iry and Saber have moved to a new hideout, but while Iry seems excited about their new location, Saber senses something is amiss...

Rider and Caster reconnect with their Masters when they delve deeper into their views. Caster wants to show his Master something he never saw which brought the attention of other Servants.