Ellen (Diane Lane) and Paul (Kyle Chandler) Taylor are hosting a large party for their 25th anniversary.
All their children are there: Environmental Lawyer Cynthia (Zoey Deutch), successful alternative comedian Ellen (Madeline Brewer), early career author Josh (Dylan O'Brien) and budding scientist 'Birdie' (Mckenna Grace).
They're a wealthy comfortable family with a beautiful lakeside home and the scene is set for a beautiful party.
Josh has brought his new girlfriend Liz (Phoebe Dynevor) along and Ellen swears she recognises her from somewhere.
Liz is pleasant and respectful but suddenly Ellen realises where she knows her from.
No good will come of this.
CW: a grim watch in the current US political climate