On an isolated high-tech island, a man code-named Zero woke up from a void. Forgetting, he was told, was the gift of healing from past wounds. His caregiver, Dr. Lan, built a peaceful new life for him. However, sporadic memory fragments come like a tidal wave, a mysterious black stone, and a flashback code name, all implying that his erased past is not an easy path. When he begins to question this perfect forgetfulness, he must make a choice whether to embrace the bliss of ignorance or dive into the abyss called the past to retrieve the self that may have been destroyed long ago. This is not only a game of memory, but also a torture of human nature and freedom.