He is the bastard of a big family and is bullied by others. Later, it was discovered that the family was having liaison with foreign enemies, and the whole family almost ceased to exist! They were killed, exiled, and even many pampered young masters and ladies were made into slaves. If he hadn't been asked to be a secret guard by the fourth prince, this would have been his fate.
However, his life was rewritten by the fourth prince. From now on, his life will be lived for Ji Yun...