Jack of All Trades is set at the turn of the 19th Century on the fictional French-controlled island of Pulau-Pulau in the East Indies. Jack Stiles is an American secret agent sent there by President Jefferson. While there, he meets his British contact and love interest, English spy Emilia Rothschild. Together, the two work to stop Napoleon and various other threats to the United States. To the public, Jack is seen as Emilia's attaché (she sometimes serves as his), but when the need arises, he transforms into a masked hero: The Daring Dragoon.