Do you want to hear a ghost story? That's good. I know a few. After their recent adventures, the team from Lockwood & Co deserves a well-earned break, so they naturally decide to risk their lives by breaking into a heavily guarded crypt. A building full of restless souls, it is also the final resting place of Marissa Fittes, the legendary and supposedly long-deceased ghost hunter – although the team suspects just how dead she might really be. What they discover changes everything. In a desperate race to uncover the truth behind the country's ghost epidemic, the team ignites one last epic battle against the Fittes Agency. A fight that forces them to venture into the afterlife and confront the most terrifying enemy they have ever known. Can they all make it out alive? Join Lucy, Lockwood, George, and Holly one last time as they battle ghosts and humans for truth and justice.