A fan story of what if Stands were never made in the JJBA world, and Hamon continued to be the main power system.
Jotaro Kujo is a 17 year old boy in Japan, born to Holly Kujo, formerly known as Holly Joestar, the daughter of Joseph Joestar. Jotaro knows little about the past antics of his ancestors, living across the planet from his warrior family members. He doesn't even have control of Hamon, the link from Johnathan having grown strained. Jotaro wants nothing to do with whatever the Joestar part of his family did before his birth.
However, that all changed when he came home from school one day to catch a hunched over grey man attacking his home. After a hard-fought victory, Jotaro discovers that the man had been an agent of the evil Dio. With this knowledge, Holly contacts the last Joestar who knew of Dio, Joseph Joestar.
Joseph informs the family of who Dio is, and that his revival bodes uncertainty for the future of the world. He is unsure of how he is still alive. Jotaro and Holly agree to let Joseph train Jotaro in Hamon in order to combat the evil Dio and to hopefully end his malicious tyranny on the Joestar family