Elizabeth Olsen's character Joan finds herself in an afterlife love triangle with her first and second husband in her new film, Eternity - but who does she choose to spend forever with? Warning: Spoilers below for Eternity. The film, which hit theaters on Wednesday, November 26, centers on an afterlife where souls are given one week to decide how they wish to spend the rest of their otherworldly days - a choice that cannot be reversed once it's made.