Fan JoJo part, a story about Dio's heritage, one very long night and a Stone Mask on the loose. JoJoNights is set in 2007, on the island of Vieux Carre, an one-island-country. The main law here is that the entire place is a resort, so people are to be happy, enjoy themselves and have a ton of fun. Things, however, get rather... bizarre, when a woman by the nickname of Mona Lisa arrives.