Brace yourselves "DBS" fans! the upcoming episode 57 of "Dragon Ball Super" is expected to unravel some major mysteries, however avid fans of the hit anime show are in for a surprise as Son Goku and Future Trunks' combination attacks seems to have no effect on Zamasu, who orders Black to find and kill rest of the army.

Spoiler Alert: This article contains spoiler for "Dragon Ball Super" episode 56.

Future Trunks successfully convinces the Resistance that Son Goku and Black Goku are not one and the same persons. One of the soldiers recognizes Future Trunks and so he chooses to go by his claim, according to reports on Hall Of Fame Magazine.

The two soldiers point out that they will look forward to seeing Trunks along with some back-up from the past. This leaves Future Trunks open-mouthed. His reaction is quite understandable as Mai, Trunks and Bulma are the only people who have information regarding the existence of the time machine.

It does not take too long for Future Trunks to realize something. The Resistance reveal that Mai had spilled the beans about Trunks' plan to travel to the past.

When Future Trunks catches a glimpse of Mai, he blames himself for assuming that she is dead. Following Trunks and Mai's reunion, Future Trunks gives introductions of Son Goku and Vegeta.

When Black Goku finally makes an appearance, Vegeta transforms into Super Saiyan Blue immediately; however, Black Goku does not grumble about this and lets Vegeta take the driver's seat in battle.

Black Goku announces that Vegeta will never be able to tower above him and he will always be human. Black shows off his Super Saiyan Rose form after that. Son Goku's battle against Black does not go on for too long as Zamasu makes an appearance and orders Black Goku to stop.

If the previous episode's ending is anything to go by, Son Goku and Future Trunks will square off against Zamasu in "Dragon Ball Super" episode 57.

Goku declares that his fight against Black is far from over. For the initial few minutes, the episode will center on Black Goku and Goku's battle.

Not interested in the battle anymore, Zamasu orders Black to shuffle off for a while. Since Zamasu has the Saiyans' attention, Black Goku needs to take care of his priority task. Black walks the tracks hoping to find the Resistance's new refuge.

Since Gowasu's disciple despise humans, it will not be possible for Zamasu to destroy the Resistance in "Dragon Ball Super" episode 57, which is slated to air on September 4 on Fuji TV. "Dragon Ball Super" episode 58 will be aired on September 11 on Fuji, Parent Herald reported.

"Dragon Ball Super" episode 58 will be dubbed as "The Mystery of Black and Zamasu."