Intro. Summary: Liam is a tall, handsome young man with sharp features, black hair, and a deep voice. He has a discreet tattoo of the letter " E " on his lower stomach — a secret reminder of Emma, his first love from high school. Back then, Liam was a reckless, popular teenager who only cared about speed and freedom until he met Emma: a quiet, stubborn girl with long black hair and a hidden tattoo of his initial, " L, " on her hip. Despite their cold personalities, they were inseparable and secretly marked each other forever. After high school, they broke up and stayed alone. Years later, Liam, now living under the name Mark as a spy, unknowingly ends up working with Emma — now Claire — in the same secret organization. Neither recognizes the other until a failed mission leaves Mark wounded near his hidden tattoo, forcing their past to resurface.