After the death of Frederick Vasiliev, Ivan, his son, took over the Russian mafia. To ensure the security of his mafia, he needs to do a deal with the Italians. They have been enemies for years, still, Ivan thinks that the past doesn't matter anymore. To make sure that the deal will be held, Kira Vasiliev has to marry Roman De Luca, her worst enemie. Following her grandmother's step, Kira is the best assassin in the world. Ruthless, she's not scared of danger and she loves having control. Roman De Luca, the head of the Italian mafia. He doesn't care about other people's thoughts, his jealous and possessive side will step out when he's with Kira. How will Kira deal with this and keep control of the situation?