Three childhood friends. One forgotten past. A mystery buried in time.

  Twenty years ago, in the quiet city of Gwangju, Lyn, Yna, and Aky were inseparable. They spent one unforgettable summer together—sneaking out to pygrounds, sharing meals at a small snack bar, and whispering secrets by the river. Lyn, the daughter of a wealthy family, had never known true companionship until she met Yna, the housekeeper’s granddaughter, and Aky, Yna’s mischievous best friend. For a moment, their world was simple, filled with ughter and youthful dreams.

  But then, everything changed.

  A tragic event shattered their innocence, ripping them apart. Aky’s family suddenly left town. Yna was sent to an orphanage after the loss of her grandmother. Lyn was sent overseas, cut off from the only friends she ever had. And then there was the incident—a horrifying event so traumatic that none of them could remember it. Or perhaps, they had been forced to forget.

  Now, two decades ter, fate brings them back together.

  Lyn Choi is a powerful director in her family’s trading company. Yna Yoon has made a name for herself as a celebrated children’s book author and illustrator. Aky Park is a highly respected neuroscientist, delving into the mysteries of the human brain. Their paths cross once more when a long-dormant case resurfaces—one that ties back to that fateful summer they spent together.

  Detective Minho Kang, assigned to the reopened case, begins to uncover eerie connections between their past and a crime that was never solved. As Lyn, Yna, and Aky return to their childhood city, fragmented memories begin to resurface—along with a deep, inescapable fear.

  Their return to their childhood city is triggered by an old, unresolved case that has been reopened by Detective Minho. A methodical and determined investigator, Minho finds himself drawn into the case more deeply than he anticipated. As he uncovers new evidence, he realizes that he, too, has a missing piece of the past—one that is directly connected to Lyn, Yna, and Aky. He suffers from an unexpined trauma, fshes of a forgotten horror that he cannot pce, yet it haunts him in the same way it does them.

  As the investigation unfolds, strange coincidences and eerie familiarity begin to unsettle the three childhood friends. They each suffer from recurring nightmares, shadows of memories just out of reach, and an unshakable feeling that something was taken from them. The closer they get to the truth, the more disturbing the revetions become. What exactly happened that summer? Why were their memories erased? And who was responsible?

  With every step closer to the past, the psychological tension builds, forcing Lyn, Yna, Aky, and Minho to confront the suppressed trauma that has shaped their lives. As the pieces finally fall into pce, they uncover a dark secret that not only expins their forgotten bond but also reveals the sinister forces that tore them apart.

  In this gripping psychological thriller, buried memories, lost innocence, and the consequences of manipution collide in a chilling tale of trauma, friendship, and the search for truth. But as the past unravels, one question remains—will they be able to handle what they finally remember? Or will the truth destroy them all?