Eight years ago, Zheng Qiaobin and Shen Aili were both buried under the sea due to betrayal and revenge. Their son Zheng Nino (later changed to Jiang Yuzhe) was adopted by distant relatives and grew up in the twisted "truth" - he believed that the death of his parents was caused by Gu Eunjae and regarded him as an sworn enemy.
Eight years later, as a top student at a top design school, Jiang Yuzhe successfully sneaked into the "Eunyou" clothing studio founded by Gu Eunjae with a carefully planned revenge plan. At this time, Goo Eun-jae has lost her past weakness and has become a well-known dress designer in the industry. She raises her daughter Min Seo-yeon alone and leads a seemingly peaceful life.
Jiang Yuzhe gained Gu Euncai's trust with his talent, secretly stole the design draft, created a plagiarism scandal, got close to his daughter, and destroyed her career and life step by step. However, he does not know that he is not the master of the revenge chess game, but that there is a mysterious force behind it. In the series of attacks, Gu Euncai not only has to fight against the enemies in front of him, but also has to face the trauma buried deep in his heart and uncover the hidden secrets that were not noticed at that time. When the fog of hatred gradually dissipated, Jiang Yuzhe discovered that the "truth" he believed in actually hid lies, and Gu Eunjae was also protecting and fighting back, re-examining past grudges and the complexity of human nature. The entanglement between the two generations is once again intertwined, and a battle about revenge, redemption, and truth slowly unfolds in the prosperity and undercurrent of Seoul.