名導演秦劍將文藝愛情片加入了精神心理元素，破格又神秘。青年精神病科醫生仲寧（關山）從外國學成回來。有一天，他拜訪女友玉佩（林嘉），發現家中的神秘怪事，入夜後，傳來女子的嚎哭聲，原來，女子就是玉佩的嫂子高秀心（葉楓），患了精神病。仲寧主動為她醫治，直至秀心的病康復，兩人陷入情網。此事給玉佩知道，非常傷心。同時，秀心為了小姑的幸福，決心讓愛，逃避愛的糾纏。葉楓演活精神失常的少婦，眼前一亮。

A sensitive love triangle helmed by one of Shaw era's top directors, Chin Chien. A psychiatrist taking a room at an old friend's apartment soon discovers an insane woman living in a neighboring flat. As the doctor gradually heals the woman he also falls in love with her. The problem arises the friend's daughter confesses her love to him as well. Misunderstanding and mistaken passions soon lead to broken hearts and an emotional confrontation to the love triangle.