Fate/stay night Season 1 Episode 6

The Two Magi (Part 2)

Rin giving Shirou the option of betraying Saber and stepping down as a master or she will break his arm and make it impossible to ever be used. Before Rin can do anything they hear a scream and Shirou goes to investigate it, followed by Rin. The two of them find girl lying unconscious on the floor. Rin starts to tend to her and Rin can't concentrate with the door to the outside open so Shirou goes to close it. Just then Shirou sees a spike being hurled towards them, at Rin's head. He blocks it with his arm and gets impaled through the arm by a spike that then disappears.A Servant reveals herself, she uses chains and spikes at the end of them as a weapon and starts attacking Shirou. Servant is about to kill him, Rin shoots the chain and frees Shirou, causing the Servant to retreat. Rin asks who the master was and Shirou says he doesn't know.Shirou heads home with Archer as his escort until he gets safely to Saber. Archer talks to Shirou about his method and plan for playing this Holy Grail War. Archer mentions how he heard about the fight with the Servant, who he calls Rider. Archer says that the longer you embrace an ideal, the more friction, contradiction you have with reality. He takes off without saying more.Shirou reflects upon what Archer said.