Dragon Ball Super DVD: Part 4

Trunks attains a powerful transformation, while a beaten Goku and Vegeta return to the past. Goku learns the Evil Containment Wave so that he can seal Zamasu away while Vegeta trains in the Hyperbolic Time Chamber. They return to the future and later, Gowasu and Supreme Kai joins in to stop the evil acts. After Future Zamasu is driven to a corner, Goku Black decide to utilize their contingency plan, and they fuse to become Fused Zamasu. Goku and Vegeta use Supreme Kai's Potara earrings to fuse and become Vegito, and a ferocious battle ensues. However, because of the time limit and physical constraints caused by the Potara Fusion, Goku and Vegeta defuse.

Future Trunks steps in as Zamasu is being overwhelmed by the imbalance of his spiritual and physical state and uses the energy of Goku, Vegeta and all the living beings in the planet, to slice Zamasu up, he is forced to cast off his physical body. He transcends his limits and his essence & will becomes one with the very cosmos itself. Goku uses Zen-Oh's button which summons Future Zen-Oh, who destroys the timeline out of annoyance. The surviving fighters escape to the past. Future Trunks and Goku return to the timeline back again, and they take Future Zen-Oh to the main timeline's Zen-Oh, and they become playmates. Future Trunks and Future Mai decide to live in the new alternate timeline that Whis created after he went to warn Future Beerus about Zamasu and they bid a heartful final farewell to the Z Fighters.