Super Dragon Ball Heroes

In the Time Nest, Chronoa (the current Supreme Kai of Time) is confronted by the mysterious alien woman, who is revealed to be Aios, a former Supreme Kai of Time. On Earth, Goku is visited by a strange being who invites him to participate in the "Super Space-Time Tournament," a grand martial arts tournament involving many other timelines. Goku accepts the invitation and is transported to another realm, where he discovers that Gohan, Piccolo, Vegeta, Hit, Jiren, and Yamcha have also been invited to compete in the tournament as a team. They are introduced to the other teams, and it's revealed that there are twelve teams in total, each with seven members. The tournament announcer explains that the first round of the tournament will last 24 minutes and will be a battle among all twelve teams, where the objective is to either capture one of three Time Fairies, or to defeat all the members of the other teams. As the tournament begins, all seven members of the main timeline's team are transported to different locations on an unknown world. Goku is confronted by Xeno Goku, who reveals that Aios is hosting the tournament and that the Time Patrol have sent a team to participate because they have business with her. The two Gokus are attacked by a group of fighters from another team, and prepare to deal with them. As many other battles begin across the tournament grounds with 14 minutes remaining in the first round, Aios observes the proceedings from afar.

With 7 minutes remaining in the first round, many battles continue raging throughout the tournament grounds. After defeating their attackers, the two Gokus begin fighting each other instead, while Yamcha manages to capture one of the three Time Fairies. This automatically qualifies the main timeline's team to move on to the next round, and they are all returned to the starting area, where they are greeted by the teams who managed to capture the two other Time Fairies: the Time Patrol team, and a team that includes Hearts and Cumber. The rest of the participating teams, however, do not return. Several mysterious warriors in black cloaks suddenly appear, and their leader explains that the losing teams have been erased from existence, along with their entire timelines. The cloaked leader explains that Aios is responsible for this, and instructs the remaining teams to prepare for the second round. However, Xeno Trunks is enraged by this revelation and attacks the cloaked leader, demanding that Aios return the Scroll of Eternity to the Time Patrol. Xeno Trunks begins fighting the cloaked leader, while Goku and Piccolo notice that the cloaked leader seems strangely familiar. Xeno Trunks and the cloaked leader each fire a powerful ki blast at each other, but Aios suddenly appears and negates both attacks. Xeno Trunks explains that Aios is a former Supreme Kai of Time, and Aios introduces herself as "the Selector of Space-Time."

Aios explains that there are now too many timelines, and that she wishes to eliminate most of them to restore balance. She brings in a number of new fighters from other timelines and universes before beginning the next round of the tournament, in which the fighters are scattered across a pocket dimension and confronted by the four cloaked warriors, each of whom possesses another Time Fairy: whoever takes the Fairy from each cloaked warrior will ensure that their team can move on to the next round. The cloaked warriors are revealed to be alternate versions of Piccolo, Future Gohan, and Bardock, as well as an unknown alien woman, who have all been empowered by Aios using the Dark Dragon Balls. Gohan and Piccolo are challenged by the alternate Piccolo, while Vegeta, Hit and Yamcha face off against the unknown female warrior. Xeno Trunks continues battling the alternate Future Gohan, who reveals that Aios recruited him from a timeline where Future Bulma and Future Trunks were killed by the androids. Xeno Trunks manages to overpower Future Gohan and tries to reason with him, while Goku and Jiren are confronted by the alternate Bardock, who powers up into an empowered version of Super Saiyan 3.

Goku asks Jiren to let him fight Bardock first, and powers up into Ultra Instinct as they begin fighting. Elsewhere, Vegeta, Hit and Yamcha are battling against the unknown female warrior, who displays the ability to create clones of herself. Vegeta defeats one of the clones, while Hit overpowers the female warrior's main body and prepares to kill her, but Yamcha intervenes in an act of mercy to spare her life. Touched by Yamcha's kindness, the female warrior develops a crush on him while continuing her battle with Hit. Goku and Bardock continue their battle and engage in a beam-clash, which Goku wins. However, Bardock seems to be pleased by this and is proud of how strong Goku has become. Meanwhile, Aeos is confronted by Chronoa, who demands that she return the stolen Time Scrolls.

Aeos places the Time Scrolls into an enchanted box, before she and Chronoa both unleash their true forms and begin fighting each other. Chronoa tries to talk Aeos out of her plan by arguing that while the growing number of timelines does present a problem, many of those timelines are all worthy of existence due to their potential. Aeos refuses to change her mind, declaring that there must only be one timeline, and overpowers Chronoa. Goku arrives with the Time Fairy that he obtained from Bardock, and also asks Aeos not to erase the defeated timelines. When Aeos refuses and attacks him, he taps into Ultra Instinct again and begins fighting her. Goku and Aeos prove to be fairly evenly-matched; Aeos surrounds Goku with energy blasts to keep him from dodging and fires a powerful beam attack at him, but he dodges using Instant Transmission and lands a direct hit on her with a Kamehameha. Aeos is shocked that Goku was able to break through her defenses, so she decides that he must be eliminated and begins to power up. Meanwhile, it's revealed that Mechikabura's spirit is still alive among the remains of the Universe Tree. He declares that he will have his revenge, but he's suddenly ambushed and impaled by Demigra, who begins absorbing Mechikabura's Dark Factor for himself.

As Goku and Aeos prepare to continue their battle, they're suddenly interrupted by the arrival of Demigra, who has become the new Dark King by absorbing Mechikabura's Dark Factor. He launches a massive energy blast that destroys Aeos's headquarters, which is seen by all the fighters across the tournament grounds. Goku, Chronoa and Aeos all survive the blast, but Demigra steals the box containing the Time Scrolls and uses it to summon an alternate version of Omega Shenron. Demigra explains his plan to destroy all other gods and create a new age of terror across all of time and space. Goku challenges Demigra, but Omega steps up to fight first. Fortunately, Xeno Gogeta arrives as a Full-Power Super Saiyan 4 just in time to deflect Omega's first attack, and easily overpowers Omega. Omega uses his strongest technique, the Negative Karma Ball, but Xeno Gogeta counters with a Big Bang Kamehameha that repels Omega's blast and destroys him. Aeos agrees to a truce with Goku, Chronoa and the others so they can deal with Demigra. Undeterred, Demigra summons his demon companion Robel, as well as the alternate Broly.