Kim Hye-in has to transfer to Cheongdam International High School after witnessing a murder. She crosses paths with Baek Je-na, a bully who happens to be connected to the case.
When a popular anchorwoman for a prime time news show becomes the suspect in a murder case, her estranged husband - who has worked as a prosecutor in the past but now works as a public defender - decides to defend his wife.
Ma Yi-Deum has worked as a prosecutor for 7 years. She sometimes resorts to drastic methods to win cases. One day, Ma Yi-Deum is transferred to a special division dealing only with sex crimes.