In the quiet, sun-drenched suburbs of 1970s America, a family’s carefully constructed world begins to unravel with the arrival of a single, unexpected letter. "So Long, Farewell" is a poignant and bittersweet drama centered on the Miller family, particularly the steadfast matriarch Laura Linney and her restless teenage daughter Florence Pugh, whose diverging dreams for the future threaten to pull them apart. As a long-held family secret comes to light, each member is forced to confront their own compromises and yearnings, all while grappling with the painful, beautiful process of letting go. With a tone that masterfully blends gentle humor with deep emotional resonance, the film paints an intimate portrait of love, sacrifice, and the inevitable change that comes with time, asking what we hold onto and what we must release to truly move forward.