Xeno Trunks identifies the new arrivals, Majin Salsa and Putine, as demons and old enemies of the Time Patrol. However, the demons offer to help the heroes in their efforts to destroy Fu's Universe Tree, warning that the Tree is continuing its work of consuming countless planets across the multiverse. Janemba attacks them all again before the two groups can come to an agreement, and the battle resumes, with Xeno Trunks powering up to Super Saiyan God. Majin Salsa suggests that Xeno Goku and Xeno Vegeta use a mysterious technique that they have employed in the past, so the other Saiyans all power up and channel their energy into the pair while the two demons hold off Janemba. By absorbing the others' energy, Xeno Goku and Xeno Vegeta break through their limits and achieve a higher level of strength, known as Full-Power Super Saiyan 4. They attack Janemba together, succeed in overpowering him, and are finally able to destroy him using their ultimate technique, the Double Dragon Fist.

Goku, Vegeta, Xeno Goku, Xeno Vegeta, Xeno Trunks, Xeno Pan, Majin Salsa and Putine arrive on the Universe Tree, which is still absorbing energy from the multiverse. Vegeta attempts to destroy the Tree with a large ki blast, but it absorbs the energy instead. Fu then appears and confronts the group, informing them that he plans to create a new universe using the Tree. Xeno Goku, Xeno Vegeta, Xeno Trunks and Xeno Pan are suddenly teleported away by Fu's female companion, who is revealed to be Towa; she tells Fu that she is doing something for him, and then teleports away along with Majin Salsa and Putine. Vegeta powers up to Super Saiyan Blue and attacks Fu, but Fu reveals that he now has access to Cumber's energy and channels Cumber's aura through his own body, using its effects to corrupt Vegeta's ki and drive him berserk. Goku tries to intervene, but Fu corrupts his ki as well.