'Dragon Ball Super' episode 58 spoilers: connection between Zamasu and Goku Black being revealed; Super Dragon Balls involved in their rise to power?

A screenshot of Black Goku from "Dragon Ball Super"YouTube/Toei Animation

The quest to beat Goku Black and his newly revealed ally Zamasu continues in "Dragon Ball Super" episode 58 titled "Zamasu and Black. The deep mystery of the two."

The detailed description of the episode revealed by Gojiitaaf teases that Goku and the rest will treat their injuries first in the present, but they will return immediately to the future to finish their battle with Black and Zamasu.

The synopsis also hints that in "Dragon Ball Super" episode 58, Beerus and Whis will discover shocking new information that has something to do with the motives and the identity of their mega powerful enemies.

"What is the surprising answer they come up with by investigating and the hints from the future they got from Goku [and company]?" Part of the episode description reads, referring to the gods of destruction.

As much as Goku is not done with Zamasu and Black, the once Kai in training from Universe 10 is nowhere near done with the saiyan either. As per the "Dragon Ball Super" episode 58 description, he wants to know a bit more about Goku and turns to a powerful creature.

"This week, Zamasu is searching for the secret of the Dragon Balls! Present Zamasu heads to Zuno's to ask about the Super Dragon Balls. While threatening Zuno and waiting for the answer, he also asks about Goku?" the synopsis teased.

Indeed, there are still tons of questions yet to be answered in "Dragon Ball Super" as far as Black and Zamasu's connection is concerned. But episode 58 appears to shed some light on this mystery.

Goku and the rest are growing closer to solving the mystery, but they also continue to grow physically weaker dealing with the two powerful beings. Will they live through this war?

Find out when "Dragon Ball Super" episode 58 airs Sunday, Sept. 11 on Fuji TV.