The universe of JoJo’s Bizarre Adventure is a reflection of the real world with the added existence of supernatural forces and beings. The first six parts take place within a single continuity whose generational conflict stems from the rivalry between Jonathan Joestar and Dio Brando, while the latter two parts take place in an alternate universe where the Joestar family tree is heavily altered.
Part 1: Phantom Blood (ファントムブラッド, Fantomu Buraddo)
Volumes 1–5, 44 chapters. In late 19th-century England, the young son of a wealthy landowner, Jonathan Joestar, meets his new adopted brother Dio Brando, who loathes him and plans to usurp him as heir to the Joestar family. When Dio’s attempts are thwarted, he transforms himself into a vampire with the use of an ancient Stone Mask and destroys the Joestar estate. Jonathan embarks on a journey, meets new allies and masters the Hamon (波紋, “Ripple”) martial arts technique to stop Dio, who has made world domination his new goal.
Part 2: Battle Tendency (戦闘潮流, Sentō Chōryū)
Volumes 5–12, 69 chapters. In 1938, a German expedition discovers and awakens a Pillar Man, a powerful humanoid whose race created the Stone Mask. The Pillar Man kills the researchers and escapes to awaken the other Pillar Men so that they may regain dominance over humanity by obtaining the Red Stone of Aja. Joseph Joestar, Jonathan’s grandson, unites with new allies and masters Hamon to defeat the Pillar Men.
Part 3: Stardust Crusaders (スターダストクルセイダース, Sutādasuto Kuruseidāsu)
Volumes 13–28, 152 chapters. In 1989, Dio Brando (now referred to as “DIO”) awakens after his tomb is salvaged from the ocean. Because Dio had managed to capture Jonathan’s body, Stands (スタンド, Sutando) awaken in Jonathan’s descendants, consisting of Joseph, his daughter Holly Kujo and grandson Jotaro Kujo. Holly, however, is unable to cope with her own Stand, and has only 50 days to live. Jotaro, Joseph and their new allies set out to defeat Dio before this deadline expires, and encounter Dio’s henchmen along the way.
Part 4: Diamond Is Unbreakable (ダイヤモンドは砕けない, Daiyamondo wa Kudakenai)
Volumes 29–47, 174 chapters. In 1999, the Joestar family learns that Joseph has an illegitimate son, Josuke Higashikata, who lives in the fictional Japanese town of Morioh. Josuke learns of a mystical Bow and Arrow that bestows Stands upon those struck by its arrowheads. As they hunt down the Bow and Arrow, Josuke and his allies encounter a serious threat in the form of the Stand-using serial killer Yoshikage Kira.
Part 5: Golden Wind (黄金の風, Ōgon no Kaze)
Volumes 47–63, 155 chapters. In 2001 Naples, Italy, Giorno Giovanna is the son of Dio, conceived while he was in possession of Jonathan Joestar’s body. Giorno seeks to become a mafia boss in order to eliminate drug dealers who sell their wares to children. His team, which consists of Stand users, must confront the mafia boss Diavolo and protect his daughter Trish Una, whom Diavolo intends to kill in order to hide his identity.
Part 6: Stone Ocean (ストーンオーシャン, Sutōn Ōshan)
Volumes 64–80, 158 chapters. In 2011 near Port St. Lucie, Florida, Jotaro Kujo’s daughter Jolyne Cujoh is framed for murder and sent to prison. She works together with other Stand-using prisoners and her father to hunt down prison chaplain Father Enrico Pucci, loyalist to Dio, who seeks the creation of a new universe shaped to his and Dio’s will.
Part 7: Steel Ball Run (スティール・ボール・ラン, Sutīru Bōru Ran)
Volumes 81–104, 95 chapters. In an alternate timeline’s 1890, United States President Funny Valentine holds a cross-country horse race with a $50 million reward to the winner. Valentine intends to use the race to gather the scattered parts of a holy corpse for his own nationalistic ends. Racers Gyro Zeppeli and Johnny Joestar uncover Valentine’s ploy and must defend themselves from his hired assassins.
Part 8: JoJolion (ジョジョリオン, Jojorion)
Volumes 105–131, 110 chapters. Set in the same universe as Steel Ball Run in 2012, the town of Morioh has been devastated by the 2011 Tōhoku earthquake and tsunami, which has caused mysterious faults colloquially known as the “Wall Eyes” to appear in town. Local college student Yasuho Hirose discovers a young man suffering from amnesia buried in the rubble and nicknames him “Josuke”. Josuke tries to uncover the secret of his past and discovers that he is the result of a fusion of two people. Josuke is also confronted with the activities of a local crime syndicate, which sells the fruit of a mysterious Locacaca tree, capable of healing people and then “taking” something in return.
Part 9: JOJOLANDS (ジョジョランズ, Jojoranzu) (Tentatively titled)
In the September 2021 issue of Ultra Jump, Araki confirmed that part 9 of the series, tentatively titled “JOJOLANDS”, would begin following a short break.