Where to Watch Fate/Zero Free & Legally

In the midst of a turbulent history, the elusive Holy Grail has sparked three brutal wars, leaving no victor in its wake. Against this backdrop, the affluent Einzbern family believes they can finally claim victory in the Fourth Holy Grail War, thanks to their possession of the vessel. To ensure their triumph, they hire the notorious mercenary Kiritsugu Emiya, binding him to their only daughter, Irisviel, through a marriage contract.

As the game of survival unfolds, Kiritsugu finds himself pitted against six other ruthless opponents, each armed with an ancient familiar and driven by their own motivations. Accompanied by his trusted familiar, Saber, the skilled mercenary must navigate this treacherous landscape, where no one is safe from elimination. His greatest adversary emerges in the form of Kirei Kotomine, a priest consumed by a desperate quest for salvation from his own emptiness.

Fate/Zero, set 10 years prior to the events of Fate/stay night, chronicles the devastating Fourth Holy Grail War, where the stakes are high and the outcome is far from certain. As the battle royale unfolds, only one thing is clear: only the strongest will survive, and the cost of victory will be steep.