Synopsis: In an alternate timeline, Future Trunks is hiding from a mysterious enemy that has been terrorizing the Future Earth. He meets with his mother in their hideout, Future Bulma, who is relieved that he survived. She is revealed to have been working on a?time-traveling machine?for their trip to find help. Just as they are about to leave, an explosion destroys Future Bulma's equipment. Seeing as they are in danger, Future Bulma urges Future Trunks to leave without her. Shortly after, a mysterious enemy demolishes the hideout. Future Bulma is killed by falling debris following the explosion, but Future Trunks manages to escape. Back in the present timeline, Goku is showing his new farm to Chi-Chi and Goten. Piccolo arrives shortly after at Goku's request. Goku says he wants to use his work as a way to train. While Goku and Piccolo are having a harvesting competition, on Beerus' planet, Vegeta is training with Whis. Goku notices this and teleports to them. Beerus asks if Goku brought him a gift, and Goku gives him a ball of lettuce he grabbed during his contest with Piccolo. Beerus enjoys the lettuce, but he considers it inadequate. Meanwhile, in the alternate timeline, Future Trunks meets up with?Future Mai. Future Trunks tells her that his mother has sacrificed herself so he could escape and return to the past and save his world. Back on Beerus' planet, Goku, Vegeta, Beerus, and Whis discuss Zen?, who is the "King of Universes". Beerus says that Zen? is the most powerful being there is. Whis says that Zen? is also able to destroy entire universes as there has originally been more than there are at present. In the alternate timeline, Future Trunks and Future Mai are eating and resting. They discuss about going back 17 years in the past, where Future Trunks' friends would be. They make their way to Capsule Corporation. They stumble upon a vortex in the sky out of which arrives the mysterious enemy that the two have been running away from. Future Trunks tells Future Mai to go on ahead as he draws his sword. He tries to face the enemy but to no avail. In order to save Future Trunks and give him a chance to escape, Future Mai acts as a decoy. Future Mai is hit by the enemy's blast and seemingly killed on the spot. Future Trunks is enraged and looks at the enemy, who is revealed to be a Goku look-alike being namedGoku Black?(????????Gok? Burakku).?