Someday or One Day (2023)

Han Jun Hee continues to grieve Koo Yeon Jun. When she receives mysterious flowers on her birthday, she has an odd feeling that her late lover may be nearby. (Source: Netflix)

While investigating her lookalike, Jun Hee receives a strange package. Kwon Min Ju develops a friendship with her crush but soon faces a huge letdown. (Source: Netflix)

Jun Hee tries to make sense of Min Ju's recollections that get jumbled up with her own. Nam Si Heon discovers a new side to Min Ju. (Source: Netflix)

As Jun Hee struggles to distinguish reality from her dreams, she receives an old diary that contains a shocking truth. (Source: Netflix)

Back in 1998, Jun Hee's bubbly personality shone through Min Ju. Those around her begin to notice — including a mysterious figure who watches from afar. (Source: Netflix)

Si Heon finds himself attracted to the new Min Ju. The love triangle grows when he decides to come clean to Jung In Gyu. (Source: Netflix)

Jun Hee tries to warn the boys of the approaching danger. Meanwhile, a horrifying event takes place at school during the night. (Source: Netflix)

Yeon Jun eventually finds his way to Jun Hee. He does whatever he can to enchant her, but falling in love is not as easy as it seems. (Source: Netflix)

Jun Hee and Yeon Jun enjoy a stretch of happiness. Meanwhile, Si Heon deals with one obstacle after another. (Source: Netflix)

Jun Hee vows to change the past and save Min Ju. Si Heon, while investigating the murder, stumbles upon a chilling truth. (Source: Netflix)

Min Ju turns a blind eye to the dangers ahead and focuses on spending time with Si Heon. Si Heon and In Gyu, however, start to grow suspicious. (Source: Netflix)

As Min Ju takes her life into her own hands, Jun Hee makes a last-ditch effort. She and Si Heon later decide to finally make things right. (Source: Netflix)