Disaster turns disaster. Unable to save Eunha from the incident that almost took Eunha's life which had previously saved her life made Yerin feel ashamed to face Eunha again. Yerin has been disgraced by her own family for being the cause of his brother's death. However, his brother's accident holds a mystery where Yerin is convinced everything is actually planned. However, when she almost found the killer, her memory was snatched away. Eunha, being outcast from the others for being a daughter of a drug dealer. Staying with a family whom the father had been murdered by her mother somehow has provoked an unsatisfied heart. Eunha is convinced that her mother is innocent. However, 'someone' insist on seeing her mother sentenced to death, or even good, dies at the hands of this 'someone'. But is the revenge well fulfilled? Taehyung and Jungkook, two men who are attacked by a sense of responsibility to protect Yerin and Eunha find a dead end to catch the real criminal. The person killed by Eunha's mother is Jungkook's own father, can he help Eunha? Will he? Taehyung, keep a big secret from them. The criminal whom they suspect is very familiar to him. In fact is the person he has been looking for, for years. Can Taehyung protect them from the dangerous murderer when he also had once failed to fight back. Is it true that the person he thought was guilty was really guilty? There is something strange here. Can Taehyung save Yerin? Why did Taehyung become weak when he found out the identity of the murderer? Can Yerin survive alone? No. 1 for #sadtruth