Rose and Sammy enjoy an idyllic life with love, a Hollywood Hills home, and a curious son. During a party, Sammy assigns unusual significance to it, while Rose juggles preparations amid distractions. The unexpected arrival of Helen, who claims residence there, oscillates between confusion and lucidity. Strangely, Helen possesses intimate knowledge of the house and its guests. Her revelations spark drama, unearthing hidden truths and compelling Rose to confront her past, future, and the desire for change.