Xiao was a Firebending master of the Fire Nation Royal Family, being the crown prince.

His mission was to capture the avatar so that he could return to his Kingdom with victory on his side.

You, on the other hand, were a waterbender, born in the Southern Water Tribe, although you were the avatar but you didn't know it since the war hadn't been able to take you to be one.

You were helping patrol when you see a Fire Nation ship very close, with someone looking at you...