From being an orphan without anyone to depend on to becoming the reliable right-hand man of the boss—Kang Eun did everything necessary to fulfill the expectations of William, the leader of the organization. Then, one day, William revealed the return of his son Isaac and assigned Kang Eun the duty of assisting him. "What’s so special about that old geezer that makes you follow him so loyally? …Wouldn’t someone younger like me be more attractive?"