Nick Duffy, a young and successful businessman, returns to London, the city where he was born and which he has not been to for many years. Nick's dream is to win the championship title in Eastern martial arts. As an assistant in making his dream come true, he chooses Mia Lockhart, a childhood friend, a master of body art and the owner of a fashionable tattoo parlor in the capital. Nick doesn't know that Mia is not just a martial arts expert, she is a guardian and has the ability to transcend her body to influence other people. Everything goes well, Nick takes shape, and suddenly one unlucky day, for a completely incomprehensible reason, one of Mia’s students dies after winning a duel against an opponent. Nick soon finds out that over the previous few years, five more people died in a similar way. What is the reason for these strange deaths? And why do they happen at the peak of fame? And, if this is a pattern, who will be the next victim of the invisible killer?