In a ghost-infested London, three teenagers—Lucy Carlyle, Anthony Lockwood, and George Karim—form a small, independent agency to combat the supernatural. Led by the charismatic Lockwood, the trio delves into perilous hauntings, uncovering dark secrets and facing formidable spirits. This British series, developed by Joe Cornish and starring Ruby Stokes, Cameron Chapman, and Ali Hadji-Heshmati, offers a thrilling blend of action, adventure, and supernatural horror.