It's official — Zamasu and Black Goku are the strongest duo the Saiyans have ever faced. As the two try to find a way to stop the immortal gods, Future Trunks is left behind to face them alone. Can they return in time to prevent him from getting killed?

The previous episode of "Dragon Ball Super" saw a new Super Saiyan form being revealed, as Future Trunks becomes enraged over Zamasu and Black Goku's taunts. While this new form hasn't been given a formal name yet, fans were quick to notice that it had some similarities to Broly, namely the white pupils and spiked hair. As for the aura, viewers can see gold and blue sparks surrounding Trunks.

While he seems more powerful than ever, it was clear that this form and Trunks' rage are not enough, so both Goku and Vegeta returned to the present timeline, bitterly defeated. Everyone gets clued in on what's happening, including Chi-Chi and Gohan. As for Beerus, he seems unconcerned with what's happening in Trunks' timeline and left with Whis. The episode ended with Goku finally learning the technique suggested by Piccolo, the Mafuba or "Demon Containment Wave." But is it enough to stop Zamasu and Black?

Episode 63 will see Goku and Vegeta's return to the future. They arrive just in time, too, as Black Goku apparently lands a critical blow on Future Trunks and is getting ready to destroy him once and for all.

The trailer for the upcoming episode, "Don't Damage Saiyan Cells! The Curtain Rises on Vegeta's Fierce Battle," teases the Saiyan Prince's rematch against Black, while also hints at Trunks' battle. The clip starts with Future Trunks duking it out with both Zamasu and Black. The young Saiyan appears to be holding his own swordfight against Black. With Goku and Vegeta back, Black promises them that the future will be their grave. Scenes show Vegeta going up against Black again and he seems to be doing better this time.

But for all their training and attempts, it doesn't look like the Saiyans will be getting the upper hand anytime soon. Reliable "Dragon Ball" spoiler Gojiitaaf recently posted the titles for the upcoming episodes and it doesn't look good. Episode 64 might see a fusion between Zamasu and Black, while episode 65 hints at the fused beings unleashing their ultimate power.

"Dragon Ball Super" episode 63 is set to be aired on Fuji TV on Oct. 23 at 9 a.m.