Dragon Ball Super S04E01 - An SOS from the Future! A Dark New Enemy Emerges!!

Goku shows his new farm to Chi-Chi and Goten, tricking Piccolo into a harvesting competition for training until Krillin arrives and accidentally reveals that Vegeta is training with Whis. Goku uses instant transmission to reach Beerus's planet, offering the Destroyer a ball of lettuce while learning that Zeno is not a fighter but has the power to erase entire universes as there had originally been 18 universes instead of the current 12 universes. Meanwhile, in an alternate timeline, Future Trunks is running from a mysterious enemy named Black who is terrorizing his Earth. Trunks meets up with Future Bulma who finally finished preparing the fuel needed for the time machine to make its trip to the past. But Black tracked Trunks to their hideout with Bulma urging her son to leave without her as she is killed soon after. Trunks later meets up with Future Mai, informing her of Bulma's death as they proceed to the ruins of Capsule Corp to reach the time machine. But Black intercepts them en route, seemingly killing Mai when she attempts to distract him so Trunks can reach the time machine. Future Trunks is enraged and looks at Black, revealed to be a Goku look-alike.