Traveling back in time to 1874 London to prevent an assassination plot against Queen Victoria, the feline wizards of Grand Central Station — leader Rhiow and her able partners Urrah and Arhu — must summon their powers to avert disaster in Victorian England, or else their archenemy, the evil Lone One, will warp time and trigger Armageddon. Teamed with a young Arthur Conan Doyle, Queen Victoria herself, and other historical figures, the feline wizards set out to find the forgotten magic that will rewrite history — or the cats who can save mankind will never have existed.