The life of Ha-Kyung, a young smart woman, who struggles against the kidnap of her daughter, as no one can solve the case, has been changed completely, when after 15 years, a similar case happens to reveal the truth behind that kidnap.
deftly criss-crosses between an unsolved child abduction and a copycat crime 15 years later, with some very thorny dilemmas revolving around the morality of revenge.