As a Chinese-American widower and professor of philosophy contemplates the life he has provided his two daughters, he recalls a traumatic memory from his youth as a delivery boy for a Chinese restaurant, riding through the dangerous streets of New York City.

Four women–a retired dancer enacting an old dance, a grandmother preparing a birthday dinner for her family, her granddaughter participating in a genetics study, and a researcher quantifying the burden of old memories–all unite under the combined weight of their war-burdened pasts in the contemporary United States.