Time Traveller

You turn and make a run for it, but two knights on horseback ride from the castle and capture you before you can even move very far. They force you back to the castle, where you are led through countless hallways until you reach a massive throne room. There is a tall man sitting on the throne and glaring at you.

"Lord, we found this man outside the castle," One of the knights says.

"Why do you come here, stranger?" He asks you.

"What should you reply?