Sarah, a young girl living in the dark shadow of her past, could never forget the tragedy that struck when she was in middle school—her mother died in a motorcycle accident. Since then, guilt had haunted her every step, trapping her in endless regret. Hoping to atone for her perceived sins, Sarah repeatedly tried to find ways to communicate with her mother’s spirit, but all her attempts ended in failure. One day, however, a mysterious man—also a student at the same university—offered her a secret method said to allow her to meet her mother in another realm. Without hesitation, Sarah followed the instructions. But from that moment on, her life turned into a nightmare. Supernatural terrors began to haunt her days, pulling Sarah into a vortex of mystery far darker and more dangerous than anything she had ever imagined.