The film opens with Larry and Joan Cutler bickering on their way to a gender-reveal party while Joan hides a terminal cancer diagnosis. Before she can confess, Larry chokes to death on a pretzel. Awakening as a 28-year-old at The Junction, Larry learns from coordinator Anna that souls revert to their happiest age and have seven days to select a permanent eternity or be cast into The Void.
Larry chooses to wait at The Junction bar, where he encounters the bartender: Luke, Joan’s first husband who died in the Korean War sixty-seven years ago and has waited in limbo for her arrival. When Joan dies soon after and arrives, she is confronted with choosing between Luke (her youthful, tragic love) and Larry (her sixty-five-year partner).
Joan tests both options, visiting Mountain World with Luke and Beach World with Larry. She gradually realizes Luke is in love with a preserved memory of a twenty-year-old girl, whereas Larry shares her lived history, parenting memories, and quirky habits. Feeling torn and unwilling to hurt either man, Joan attempts to choose a solitary eternity. Larry selflessly releases her, encouraging her to pursue happiness with Luke.
While joining Luke in his paradise, Joan experiences an epiphany: perfection is hollow without the lived-in bond of someone who truly knows her complete life. She shares a tender farewell with Luke, granting him closure. Joan rushes back to Larry just before his time expires. Because switching designations is forbidden, Joan and Larry break afterlife protocol with Anna's quiet blessing, escaping as romantic fugitives into an uncharted, unscripted eternity together.