The hidden hour

Eunho, a 26-year-old woman, has been haunted by recurring dreams of a faceless student wearing her high school uniform. The dreams stir fragmented memories, but her past remains shrouded in mystery. When she reunites with her high school friends, emotions overwhelm her, and she flees the reunion. In a shocking turn of events, she drowns in a nearby river. Instead of death, Eunho awakens in her 17-year-old body, transported back to her school days, Will she able to go back in her time and find out about her memory.