The movie Hitman: Agent 47 tells the story of him, a hit man whose name is due to the number 47 tattooed on the back of his neck. This agent was created with the idea of turning it into a killing machine, for which it was genetically modified.
This agent works for a secret organization, which pays him. This organization assigns a difficult mission, which consists of finding out everything about another organization that is investigating the first one, to which it pays Agent 47.
Once you find your mission, you will end it by using the means you deem necessary, including killing everyone who gets in your way. To help you, you will have a young woman with him, who will become a kind of battling partner.
Agent 47 sets out to accomplish his mission, in which he may find out about his organization that he will not like it at all.