Whimsey, a disinherited young Lord and his two friends are minding the office of England's Greatest Detective, Skipton Jack, in 1880's London. When there is an unexpected knock on the door, our reluctant heroes are put to the test to solve a mystery and save the Mayfair children from the evil Nanny Nightshade, who will stop at nothing to receive a handsome ransom despite the many obstacles placed in her way. Come join our heroes in a merry fast paced romp throughout London, as Whimsey and Co. find their footing and embark on an adventure that will change all of their lives forever.

Victorian London will never be the same after rambunctious New York twins, Panda and Poppy Wilcox, arrive to spend a fun-filled summer with their Uncle Whimsey. Unbeknownst to the twins seeing the sights will have to wait, as secrets are revealed, a mystery unfolds, and a new adventure begins.