JoJo's Bizarre Adventure: Eyes of Heaven Chapter 3: Diamond is Unbreakable

The game's main storyline takes place immediately following the events of Stardust Crusaders. Jotaro Kujo and his allies, having just defeated the evil vampire Dio Brando, are suddenly attacked by friends and enemies who have either disappeared or died along the way. They are soon approached by a young Robert E. O. Speedwagon, who possesses a piece of the Saint's Corpse that allows him to not only travel through time and space, but also dispel the evil influence possessing the mysterious foes. Speedwagon leads Jotaro and his allies on a journey through space, time, and alternate universes, in order to stop another iteration of Dio and his disciple Enrico Pucci from obtaining the Saint's Corpse and purging the world of the Joestar family. In their quest to collect the Saint's Corpse, Jotaro and Joseph are joined by characters from each part of JoJo's Bizarre Adventure, including Jotaro's great-great-grandfather Jonathan Joestar, a younger version of Joseph Joestar, Joseph's and Dio's illegitimate sons Josuke Higashikata and Giorno Giovanna, Jotaro's own daughter Jolyne Cujoh, paraplegic jockey Johnny Joestar, and an amnesiac given the temporary name of Josuke Higashikata. The heroes collect every part of the Corpse save one. Suddenly, the Joestars encounter an alternate Dio Brando, now wielding an upgraded version of his Stand that can rewrite reality itself, which he calls The World Over Heaven. Though Dio takes most of their collected parts of the Corpse, the group narrowly escapes Dio's grasp, with Jotaro retaining a piece of the Corpse. Funny Valentine appears to the group and reveals that the version of Dio they encountered, now known as DIO, Gone to Heaven, is from an alternate world where he was victorious over Jotaro and succeeded in his becoming a god. He learned of the base world upon encountering Valentine and nullifying the infinite rotation Johnny had placed upon him and now plans on using the Saint's Corpse to take over all of reality and erase the Jostars from existence. Valentine further reveals that this version of Dio still bears the same type of Stand as Jotaro's, and remains unaware that objects from parallel dimensions are drawn to each other and destroyed upon contact. As the Joestars continue battling Dio's minions to regain their stolen Corpse parts, Valentine is eliminated by Dio as retribution for his betrayal. Eventually, the Joestar group returns to Egypt to confront Dio, who defeats and absorbs most of the group's souls along with the completed Saint's Corpse. Despite a final stand by Jotaro and Jolyne, the former having discovered his own Stand's upgraded ability, Dio eliminates Jolyne and attempts to do the same to Jotaro. However, Jotaro uses Dio's armlets from his own universe to destroy Dio's hands, the source of his Stand's ability to rewrite reality, before ultimately pummeling Dio and completely destroying his body. After Dio's defeat, Jotaro uses Star Platinum's new powers to restore the original timeline and prevent the deaths of the Joestar family's allies. Returning to the same point where he left, Jotaro parts ways with his friends as he and Joseph board a flight to Japan. Eleven years later, Jotaro arrives in Morioh with a six-year-old Jolyne, hoping to be a better father to her in this timeline. As Jolyne runs off to play with a turtle, Jotaro approaches a youth named Koichi Hirose and asks him about a high schooler named Josuke Higashikata, setting the events of an alternate Diamond Is Unbreakable in motion.