Fate/stay night

After a mornings training session with Saber, Shirou is then straightaway dragged off by Rin for some more training of her own. While this is going on Shirou receives a phone call from Shinji, asking Shirou to meet him at the school. Because it seemed urgent Shirou heads of to school and is greatly shocked by what he sees. Shinji shows his true colors and says how he wanted to show Rin how he was superior to Shirou and that he would defeat him here. What will happen to Shirou and does he have the will to fight off a Master and his Servant, alone?