11 parts Ongoing One night, after a heated argument with her mother Haerin, Danielle storms up to the attic in search of solitude. Dust blankets the old trunks and boxes, but what truly captures her attention is a worn leather journal tucked inside an old chest. The journal belongs to her mother, written when she was seventeen. As Danielle flips through the faded ink and fragile pages, she finds a group photo pressed between them. The faces are smiling, frozen in time-but one girl stops her heart cold.
Jihye Marsh. A girl with Danielle's face.
The resemblance is uncanny-too sharp to dismiss as coincidence. Confused and unsettled, Danielle reads until her eyelids grow heavy, clutching the photo in her hands. When sleep takes her, she awakens to a strange yet familiar world. The calendar says 1991. The clothes, the music, the slang-all different. The mirror confirms the impossible truth: she isn't Danielle anymore. She is Jihye Marsh.
Here, Danielle meets her mother again-but not as "mom." Haerin is seventeen, the same age as Danielle, full of fire and unpolished dreams. Alongside Haerin are her friends Minji, Hyein, and Hanni-girls bound by youth, secrets, and the fragile thread of friendship.
Danielle learns that Haerin and Jihye had been best friends, and as time passes, she discovers something else: Haerin had loved Jihye, deeply and silently. Torn between her role as Jihye and her identity as Danielle, she must navigate this fragile past while unraveling the mystery of Jihye Marsh's sudden disappearance.
Was Jihye lost... or did she become Danielle? And if Danielle uncovers the truth, will she ever be able to return to her present-or will she vanish into the life of a girl who once existed?
