Dr. Gangjae Lee is a genius biologist whose conceited personality pushes people away. But that doesn't bother him since he's happily married to the astonishing beauty, Jaehee. While posing as a college research professor, Dr. Lee secretly participates in a human cloning project run by Dr. Suh. After thousands of experiments, a few full-grown clones are born, but these miracles of science don't live past 7 years. Without Gangjae's prior knowledge, the next sub-quality clone is made of his wife, Jaehee, who they call Clone 504 and June...and to have a clone of his wife interacting with other men is not such a welcome miracle. Hidden from the eyes of the world with the support of underground financial powers, Dr. Lee continues to devote himself to the cloning project. But one day, his wife, who he treasures more than his own life, gets brutally murdered and the story takes a riveting turn...