The story centers on Suyol, who is deeply committed to her relationship with Ajin. However, unbeknownst to her, Ajin is secretly having with an affair with a man named Jaehyun. As Suyol remains blissfully unaware of the betrayal, her close friend Harry struggles with her own hidden feelings for Suyol. Will Suyol's world come crashing down when she discovers the truth about Ajin's affair? And could this painful revelation open the door for Harry to finally confess her love?