At the funeral of Chunha Medical Group executive Jin Ho Hae, Yu Bang and Ho Hae's niece, Yeo Chi, are arrested for his murder.

Three months earlier, events begin to unfold — revealing complex ties between Yu Bang, Yeo Chi, rival executive Choi Hang U, and researcher Cha U Hui. As their stories intersect, the truth behind Ho Hae's murder slowly comes to light.