Flynn Carsen, a year after his first mission as the Librarian, has been on many more death-defying missions to protect the world from evildoers, including a trip to Utah to recover a mystical crystal skull. Upon his return to the Library, the audience is introduced to more mythic artifacts stored there: The Head of Medusa, the Trident of Poseidon, the Shroud of Turin, and the Pipes of Pan. He has moved out of his mother's house into his own apartment, but still feels held back by Judson, his supervisor, who tells him that "sometimes you have to give up what you want for the greater good" in order to go from being a "good librarian" to a "great librarian".