Twenty-five years after environmental collapse left the Earth uninhabitable, Mother, Father and Son are confined to their palatial bunker, where they struggle to maintain hope and a sense of normalcy by clinging to the rituals of daily life—until the arrival of a stranger upends their happy routine.

As tensions rise, their seemingly idyllic existence starts to crumble, with long-repressed feelings of remorse and resentment threatening to destroy the family’s delicate balance. But their reckoning with difficult truths also points to a different way forward, one based on acceptance, love, and a capacity for change.