: Saber, left without a Master after Caster’s defeat, forms a new contract with Rin Tohsaka. This allows Saber to fight at her full potential for the first time, easily outmatching Archer.
: Archer’s true identity is confirmed—he is a future version of Shirou Emiya who became a Counter Guardian and now seeks to kill his past self to end his cycle of eternal regret. Fate/stay night (Dub) Episode 18
Fate/stay night [Unlimited Blade Works] Episode 18 Discussion : Saber, left without a Master after Caster’s
: Shirou, Rin, and Saber storm Ryuudou Temple to rescue Sakura Matou, who has been captured by Caster to serve as a sacrifice. : The episode ends by teasing the arrival
: Archer reveals his Noble Phantasm, Unlimited Blade Works , a "graveyard of swords" that allows him to replicate any weapon he has seen. To protect Rin and Shirou, the Reality Marble is eventually dispelled, but Archer successfully kidnaps Rin to force a final duel with Shirou.
: The episode ends by teasing the arrival of Gilgamesh, the "Golden King," who disrupts the battle in the following episode.
The Studio Deen adaptation takes a "remix" approach to this episode, blending elements from multiple story routes into one climax.