Under the watchful eye of newly elected First Seeker Sarmak, the Starfinder Society embarks on an archaeological expedition to Eternity, an ancient and mysterious city of the First Ones on the planet Aballon. Using a relic known as the Eternity Drive, the Starfinders launch initial explorations, uncover long-forgotten information about the First Ones, and clash with a violent faction of anacites named Those Who Call.