DR. MAN, an unorthodox psychiatrist, is skilled at extracting the deepest secrets of his patients. One day, he hops into a random cab and encounters CHOl, the cab driver with deeply disturbing condition. A few days later, the two men cross paths again. CHOI has been ordered to undergo a psychiatric evaluation. MAN quickly realizes that CHOI struggles to differentiate between dreams and reality. He constantly sees "devils". Awake or not, his mind can never rests; his body continues to waste away.

As CHOl's story unfolds, MAN begins to experience disturbing and perplexing dreams. These dreams are vivid and unsettling. The deeper MAN delves into CHOl's past, the more intense and haunting his nightmares become. MAN becomes increasingly suspicious of what is causing his condition. Are his night terrors a result of repressed memories, or is there a price to pay for uncovering the ghosts hidden in CHOl's closet?

文醫生是一個非一般的精神科醫生，他善長發掘病人取深層的秘密。他偶然上了夜班計程車司機蔡辛強的車，在途中他發現蔡辛強的舉動有點不尋常。在幾天後，蔡辛強因為不小心駕駛需要做心理評估，文醫生成為了負責醫生，在過程中發現蔡辛強不能分辦夢境與現實，而且身體機能開始衰退，他決定找出蔡辛強問題的根源。

在尋找的過程的中，文醫生也開始發一些令人不安和困惑的夢，在他一步步了解到蔡辛強背後的故事，他的夢境也
變得越來越強烈跟可怕。到底他的惡夢來自被壓抑的記憶，還是找出蔡辛強秘密的代價？