memory.

Sun is a jobless aspiring writer, but is lost in life and doesn't know where to go or what to do.
He lives in New York, and meets someone that piques his curiosity.
But Sun is lonely, careless, and unaware of who he is.
Through trials in his life, caused by him and the world around him, he realizes who he truly is and what he's truly capable of. The horrible and the great.
He realizes an apology simply isn't enough, and that once you lose something you truly can never get it back.