This masterpiece from writer Kim Eun-sook of Guardian: The Lonely and Great God, Mr. Sunshine, and director An Gil-ho of Stranger is 8 episodes of 60 min. Drama, coupled with Revenge, Bullying, Childhood Trauma and Confrontation.
The story follows Dong-eun, starring Song Hye-kyo from Descendants of the Sun, who has painful memories from bullying and school violence. 18 years later, her revenge begins by driving all the perpetrators and everyone around them to the brink of ruin.
Yeo-Jung, starring Lee Do-Hyun from Sweet Home, is another victim of a miserable tragedy. Accidentally, or intentionally Dong-eun and Yeo-Jung get tangled and conspire the revenge together.