Who are you? you must be wondering. I am your soulmate, your old friend, and I have come back to this city of sixteen million in search of you. So begins the first letter that falls into Wang’s lap as he flips down the visor in his taxi. The letters that follow are filled with the stories of his previous lives. As the letters continue to appear seemingly out of thin air, Wang becomes convinced that someone is watching him --- someone who claims to have known him for over a thousand years. And with each letter, he feels the watcher growing closer and closer.