Walking home from work one night, Thana, a mute seamstress in New York City's Garment District, is raped at gunpoint in an alley by a mysterious, masked attacker. She survives and makes her way back to her apartment, where she encounters a burglar and is raped a second time. Thana bludgeons this second assailant to death with an iron. She then keeps his .45 caliber M1911A1 pistol, dismembers the burglar's body, puts the pieces into plastic garbage bags and gradually disposes of them in various locations throughout the city. She begins to have frequent nightmares and hallucinations of the first assailant stalking her, and her mental stability begins to dim. Thana is noticed by a man while she is disposing of one of the bagged body parts; retrieving the bag, he chases and frightens her. Fearing another sexual assault, she fatally shoots him. This event furthers her impulse for vengeance. Gradually, Thana transforms her appearance to bee a more and more seductive bait, and sets out to kill any man who annoys her. Near the end of the film, she dons a nun's habit and red lipstick to attend a Halloween party with her boss and co-workers. Her boss tries to take advantage of her and is killed; Thana then begins a shooting spree and targets all the men present. Finally she is stabbed by a female colleague.

米兰妮（蒂比·海德莉 Tippi Hedren 饰）是一个富家女，偶然在宠物店里遇见律师米契（罗德泰勒Rod Taylor 饰），二人萌生爱意。第二天米兰妮带着她的一对宠物鹦鹉到访米契居住的波德加湾小镇，却被一只海鸥袭击，当场受伤。然而谁也没料到，这次鸟袭击人的事件，只是鸟类大规模攻击人类的小序幕。

在纽约，一个暴力和愤怒的人被他残暴的过去囚禁，穆罕默德侯赛因。他的任务是绑架和杀害一位和平的穆斯林学者，faredRahmani。在世界的另一边，新德里的同性恋女孩莉拉·辛格绑架了她的双性恋爱人萨基·泰勒。她的使命——嫁给她的爱人，从此过上幸福的生活。