As the new season begins, a massive storm over Manhattan draws the Librarians back together to solve the mystery after having been off on their own for months. They soon discover the culprit is none other than Shakespeare’s Prospero. Meanwhile, Jenkins discovers there’s something wrong with the Library since it returned from the Void.
Throughout the season, The Librarians’ individual identies will be challenged as they confront their pasts and potential futures. Their previous methods – where they could just jump from place to place, grabbing artifacts before they caused too much harm or putting ghosts and monsters to bed – just aren’t going to cut it anymore. Magic is popping in the world too fast and in too many ways to be completely hidden. Even the mission of the 2,000-year old Library has to change, creating a fundamental split between Eve Baird and Flynn Carsen that could completely derail the Librarian's mission to protect the world.source