Thirteen-year-old Kim Sojin lost his parents and lived in hiding, devising a plan for revenge. After 15 years, he returns to Seoul to expose the chairman of a company built on the bones of his family. But his plans are disrupted by Maria Sokolova, who flies to Korea to attend an interview for the same position. Their encounter not only brings Kim a slew of problems, but also makes Maria the owner of the job he had been counting on. Now both of them find themselves in a dangerous situation, where Kim is ready to make any sacrifice to achieve his goal.