Trunks returns from the future to train with Goku and Vegeta. However, it disappears without warning. Then the mysterious Fu bursts in, telling them that Trunks has been imprisoned in the Prison Planet, a mysterious complex in an unknown place in the universes. The group seeks the dragon balls to free Trunks, but an endless battle awaits them! Will Goku and the others rescue Trunks and escape the Prison Planet?
In the Time Nest, headquarters of the Time Patrol, the Supreme Kai of Time informs Xeno Trunks and Xeno Pan that her mystical bird Toki-Toki has disappeared. She sends the two of them to find him, while also being worried about a supposed "Bird of Catastrophe" that has been released. Meanwhile, Toki-Toki has appeared on Earth in the main timeline, where Goku finds him while training with Vegeta, Gohan, Piccolo, Krillin, and Android 17. Xeno Trunks and Xeno Pan arrive and are happy to see that Toki-Toki is safe, with Xeno Pan explaining that his existence is very important for the inner workings of the multiverse. Suddenly, the group is interrupted by the arrival of all twelve Gods of Destruction.
Goku, Vegeta and Xeno Trunks are fighting against Beerus, while the others and the other Gods of Destruction watch. Beerus has the upper hand, until their battle is interrupted by the arrival of Xeno Goku and Vegeta, who warn them that they need to stop the fight. Suddenly, a mass of giant tree roots appears in the sky around the Earth and begins draining the planet's energy. The other gods all rush back to their own universes to protect them, leaving Beerus, the Earth's heroes, and the Time Patrollers behind. They are then confronted by Fu, who is accompanied by Doki-Doki. Fu confirms that this is the "Bird of Catastrophe" that Beerus was worried about and that the tree roots are part of the Universe Tree, which grew from the Universe Seed that Hearts was developing. Fu escapes through a portal. Beerus rises into the sky and powers up, shielding the Earth by allowing the Tree to feed on his energy instead; however, he warns the others that he will not be able to keep this up for long.