Seven years after the deaths of Jotaro and Joleyne Kujo, Koichi learns of another Joestar descendant. He finds it is the one and only Joelle Joanie Siwa, a famous 15-year-old American. Can Koichi (along with Josuke) train the former Dance Moms star to harness the power of her Stand? Will JoJo Siwa be able to defeat the dangers that lurk around the corner, while also balancing learning to drive, making merch deals, and vlogging?