凯特（贝蒂·戴维斯 Bette Davis 饰）和帕特里希（贝蒂·戴维斯 Bette Davis 饰）是一对孪生姐妹，拥有一模一样的长相，就连亲生父母都很难分辨出她们究竟谁是谁。一位名叫比尔（格伦·福特 Glenn Ford 饰）的灯塔巡视员出现在了姐妹两人苍白的生命里，她们顿时双双坠入了情网，最终，比尔选择了帕特里希。为了忘记比尔，凯特开始投身于艺术创作之中。 一晃眼几年过去，凯特始终都没能忘记内心的悸动。一天，她和帕特里希出海航行，结果发声了意外，帕特里希被茫茫大海所吞噬。凯特幸运的逃过一劫，捡回了一条命，但她接下来必须将帕特里希的死讯告诉比尔。
After the parties, jobs, and hook-ups well into their thirties, eight friends are trying to hold on to their group as they learn that while growing up is hard, staying close is harder.
Dragonfly is about unlikely friendships. Seeing a lack of care, COLLEEN decides to care for ELSIE. Never sure of her motivations, Dragonfly is a chillingly tense narrative that will make you question your preconceived judgements.
