Kino, a 15-year-old traveler, forms a bond with Hermes, a talking motorcycle. Together, they wander the lands and venture through various countries and places, despite having no clear idea of what to expect. After all, life is a journey filled with the unknown. Throughout their journeys, they encounter different kinds of customs, from the morally gray to tragic and fascinating. They also meet many people: some who live to work, some who live to make others happy, and some who live to chase their dreams. Thus, in every country they visit, there is always something to learn from the way people carry out their lives. It is not up to Kino or Hermes to decide whether these asserted values are wrong or right, as they merely assume the roles of observers within this small world. They do not attempt to change or influence the places they visit, despite how absurd these values would appear. That's because in one way or another, they believe things are fine as they are, and that "the world is not beautiful; therefore, it is."

In the coastal city of Naples, corruption is teeming—the police blatantly conspire with outlaws, drugs run rampant around the youth, and the mafia governs the streets with an iron fist. However, various fateful encounters will soon occur. Enter Giorno Giovanna, a 15-year-old boy with an eccentric connection to the Joestar family, who makes a living out of part-time jobs and pickpocketing. Furthermore, he is gifted with the unexplained Stand ability to give and create life—growing plants from the ground and turning inanimate objects into live animals, an ability he has dubbed "Gold Experience." Fascinated by the might of local gangsters, Giorno has dreamed of rising up in their ranks and becoming a "Gang-Star," a feat made possible by his encounter with Bruno Buccellati, a member of the Passione gang with his own sense of justice. JoJo no Kimyou na Bouken: Ougon no Kaze follows the endeavors of Giorno after joining Bruno's team while working under Passione, fending off other gangsters and secretly plotting to overthrow their mysterious boss.

The year is 1999. Morioh, a normally quiet and peaceful town, has recently become a hotbed of strange activity. Joutarou Kuujou, now a marine biologist, heads to the mysterious town to meet Jousuke Higashikata. While the two may seem like strangers at first, Jousuke is actually the illegitimate child of Joutarou's grandfather, Joseph Joestar. When they meet, Joutarou realizes that he may have more in common with Jousuke than just a blood relation. Along with the mild-mannered Kouichi Hirose and the boisterous Okuyasu Nijimura, the group dedicates themselves to investigating recent disappearances and other suspicious occurrences within Morioh. Aided by the power of Stands, the four men will encounter danger at every street corner, as it is up to them to unravel the town's secrets, before another occurs.