It had originally been a normal night in New York. The vampires and the werewolves were at each others throats. Both were arguing with the shadowhunters. Simon had needed time away. His best friend was a Shadowhunter Nephilim. It was hell having to be separated for now. It left Simon feeling isolated and alone.
As the daylighter walked down a side street of New York, his heightened hearing as a vampire caught the sound of a struggle which caught his attention. Simon immediately followed his senses of smell and hearing as he picked up the pace till he was moving at vampire speed.
As Simon came upon the scene, his deep dark eyes surveyed the scene. You were hurt. Your attacker stood over you. The vampire spoke.
"Hey! Back off!"
As a human, Simon would not be able to do much about the situation. As a vampire though he wasn't as helpless. Simon moved swiftly putting himself between you and your attacker.