Autumn Emerson was the Queen of the Shadow Mafia, inherited from her father. She was twenty-five years old and ruling a gang was a huge achievement for Autumn. However, there were some haunted memories linking between her fingers and a trigger of a gun. Meanwhile, Ian Beckett was the King of the Silver Mafia, whose life went upside down when his parents arranged his contracted wedding with the woman he loved to annoy since their childhood: Autumn Emerson. In order to protect their honor in front of their respective gangs, they have to put on a facade of being in love. What would happen when the contracted love had started to turn real?