Rosalia and Nick, the son of a mafia boss, were once a loving engaged couple — but a misunderstanding turned them into each other's killers' enemies. Torn between love and hatred, Nick decided to train Rosalia into the most lethal assassin in the mafia as atonement. After seven years of training, Rosalia began carrying out missions with outstanding results. One day, Nick gave her a new assignment: get close to Dominic, the son of a rival mafia family, and become his girlfriend to earn his trust. A tangled web of love, hate, and vengeance between the three unfolded from there…