To raise surgery fees for her mother, young Lisa works as a casino dealer. She is coerced by Mafia boss Mark into signing a special contract, serving as his personal assistant and submissive. As affection grows between them, they unexpectedly discover they are step-siblings in a blended family, and start a forbidden romance under their parents' noses. Rival gangs and Mark's traumatic nemesis Anna launch successive attacks. After gunfights and a deadly bomb trap on an abandoned cruise, the two achieve mutual redemption. Eventually, Lisa reverses their power dynamic, tames the once dominant Mafia godfather, and gains both love and freedom.
