Five years after vanishing, Gyeom reappears as a critic before Mubee, now a director. But his nonchalant attitude stirs complicated feelings in her.

Living in close proximity, Mubee and Gyeom become obsessed with each others' every move. Hong Si-jun and Son Ju-a struggle to reconcile their past.

After Mubee and Ju-a partner on a new movie, Ju-a seeks Si-jun's help for the film's music. Gyeom faces a dark consequence from one of his reviews.

Gyeom's confession preoccupies Mubee, even though she tries to ignore it. Meanwhile, Ju-a keeps visiting Si-jun, hoping he'll compose the film's music.

Mubee gives in to Gyeom's persistence — until he fails to show up one night. Si-jun and Ju-a become trapped together, leading to a frank exchange.

Ko Jun tries to hide a big secret, sparking Gyeom's suspicions. Ju-a and Si-jun reflect on the past — and where they went wrong.

As Gyeom pretends to be okay, his loved ones worry for his well-being. But soon, Mubee helps him find the courage to confront his feelings.

Si-jun and Ju-a wrestle with their emotions as they question their future. Meanwhile, Mubee's film encounters a hurdle, leaving her feeling at a loss.

Shedding their past, Mubee and Gyeom resolve to live their life to the fullest. Si-jun and Ju-a make a final decision about their relationship.