The narrative unfolds on a sun deck where three characters—Diana, James, and Maya—engage in contemplative dialogue interspersed with reflections on their lives and relationships. At the center of their discussions is Eric Lighter, a mathematician and Diana's ex-husband, who is grappling with the effects of mental health challenges. As the characters absorb the warmth of their surroundings, themes of memory, existential reflection, and the passage of time emerge,particularly through Diana's yearning to understand Eric's recent struggles and the transformative nature of their shared histories. The conversation primarily consists of witty exchanges on such subjects as education, religion, the need for sunscreen, society's way of handling people with mental disorders, and some "cringy" discussions about human race.Mathematics plays no role in regards to the plot besides the stereotypes that connect mathematics with both intelligence and insanity.