Facing terminal kidney failure, Boonmee opts to spend his remaining time in the tranquil countryside with his beloved family. Unexpectedly, the spirit of his late wife materializes to tend to him, while his estranged son returns in an unusual, non-human guise. As he reflects on the origins of his condition, Boonmee embarks on a journey through the jungle with his family, aiming for a mystical cave on a hilltop that marks the beginning of his first life. The experience intertwines love, memory, and the supernatural, offering profound insights into existence and rebirth.