Eternity (2017) Plot Summary & Ending Explained

The ending of Eternity resolves Joan’s impossible dilemma by distinguishing between the allure of a memory and the substance of a lived reality. Tasked with choosing an eternal partner, Joan initially selects Luke, her first husband who died young, drawn in by the romanticized potential of their unfinished story. However, she quickly realizes that their connection was rooted in youthful impulsiveness rather than the deep, established bond she shared with Larry. Her ultimate decision to leave Luke and fight for Larry signifies a rejection of the "what ifs" that plague us, grounding her choice in the identity she formed over a lifetime rather than a past version of herself.

Joan’s journey to reunite with Larry is not without consequence, as she must break the rules of the afterlife and traverse purgatory to find him. This act of rebellion emphasizes that their love is worth fighting for, even if it upsets the established order. While their final settlement suggests they may be "running" forever due to her violation of the afterlife's bureaucracy, the film frames this as a hard-won victory. Director David Freyne imbues the conclusion with a grounded realism, noting that while Joan made the right choice for who she is now, the "happily ever after" is rarely static; she chose the partner who represents her actual life, not an idealized fantasy.