The Party (2017 film)

Janet, a prominent British politician in the Parliamentary opposition party, has just been announced as shadow minister for health. She has invited her friends to a small celebration at her house, including April, April's estranged German partner Gottfried who is a life coach and self-proclaimed spiritual healer, women's studies professor Martha and her partner Jinny who is a renowned chef, and Janet's colleague and subordinate Marianne with husband Tom, a handsome younger banker.

Janet's husband Bill slumps in his chair listening to jazz, staring vacantly, and heavily drinking as the guests arrive. Marianne fails to arrive, and Tom explains she'll be late. Tom, visibly agitated, locks himself in the bathroom, where he snorts cocaine and brandishes a handgun in the bathroom mirror. Janet meanwhile has been discretely exchanging phone calls and text messages with an unknown lover.

April, continually belitting Gottfried, proposes a toast to Janet on her appointment. Martha and Jinny announce that Jinny is pregnant with triplets via in vitro fertilisation. The celebratory mood vanishes when Bill announces he is terminally ill with advanced cancer. Gottfried tells him to look past Western medicine and explore his spiritual capacities for a chance of an extended life. Bill is a well-known atheist intellectual but listens to Gottfried's spiritual pep talk without argument. When Janet announces she'll resign from the shadow cabinet to give end of life care to Bill, he announces he's leaving her to spend his final days with Marianne. Tom, aware of Bill's plan, berates him in front of the others, and runs outside to throw Bill's gun into the trash.

Martha patronizes Jinny as they talk about their future as parents, and Jinny threatens to leave her. Martha pleads with Jinny to stay with her to help with the three children. Janet, distracted by the drama, burns the canapes and throws the smoking vol-au-vents into the trash where she finds the gun. She brings it inside and conceals it in the bathroom. April joins her to discuss the evenings events in private, and April confesses she is proud of Janet's accomplishments.

Gottfried counsels Tom and Bill but emotions escalate when Bill, very drunk, rambles about the love he shares with Marianne and Tom punches him unconscious. Gottfried and Tom try to resuscitate him. As Janet is about to confess a secret to April, she's retrieved from the locked bathroom to help with Bill. When she succeeds in reviving him, he looks her in the eyes and asks "How did it come to this?"

The doorbell rings, presumably by Marianne. Janet retrieves the gun, opens the door, aims at the unseen visitor and exclaims "You told me you loved me. ME! You traitor!" as the screen cuts to black.

• Patricia Clarkson as April, Janet's best friend, a cynic and realist
• Bruno Ganz as Gottfried, April's estranged boyfriend, a pseudo-scientific healer
• Cherry Jones as Martha, Janet's friend, a women's studies professor
• Emily Mortimer as Jinny, Martha's pregnant partner, a famous chef
• Cillian Murphy as Tom, "in finance", the husband of Marianne, Janet's subordinate
• Kristin Scott Thomas as Janet, an idealistic politician
• Timothy Spall as Bill, Janet's husband, a materialist and atheist professor