Fate/stay night Specials

Obsessed with obtaining the Holy Grail at any costs, Shinji and his Servant, Rider, press their attack on a still weakened Saber. Thus it becomes imperative for Saber to begin training Shirou to improve his martial skills and aid her in the battles to come. When the final confrontation with Rider comes along, Saber is forced to reveal her hand. Who is she really?

Source: (ANN)