Agent Niall James Horan dedicate his life to protect his beloved country Ireland. He is loyal, bright, light on his feet, a martial art expert, diligent, technology expert, young, handsome and headstrong. He is the perfect agent. But, being a perfect agent does not mean that he is perfect; he admit that ever since he started his career, he felt hollow like a polo. Hollow because, he could never love a person, and could never feel what it's like to be loved. They said that, when you enter this field, your love-life is practically non-existent. Niall learned that what they is true, and he had to learn it the hard way; the person that he thought was forever, was shot right between the eyes when he was taken as a hostage in a mission. He was hollow. He was an agent with no heart. Until he met Harry.