Synopsis：In a luxury hotel under Seoul’s glittering night, Sara High’s new teacher Yeseul and millionaire Jaecheol share a forbidden secret. When Jaecheol’s wife Miran and Yeseul’s lover Namhoon are drawn into the web, desire and betrayal spiral out of control. A mysterious music sheet theft at school pushes Yeseul closer to the truth: what are they hiding? As their choices grow more dangerous, will their story end in destruction or redemption?