'Attack On Titan' Season 4, Episode 10 Preview, Spoilers: 'A Sound Argument'

Zeke's betrayal comes as a shocker to Gabi and Falco as the soldiers reflect on the past. "Attack on Titan" Season 4, Episode 10 (or Episode 69) is titled "A Sound Argument."

The episode will likely showcase Eren's plan to crush Marley. He believes they need to fight and fight to win.

Even after the carnage that resulted in massive destruction, he fears if the Marleyan port remains in working condition, the enemies will initiate a counter-attack on Paradis Island.

"There were no allies in the outside world. So, to survive, they had to destroy the enemy. Was it the right thing to do? No one knows for sure," the summary for Episode 10 read, as Spytrue tweeted.

Episode 9 revolves around the past and the present. The installment opens with a Marleyan ship getting close to Paradis Island. Its captain prepares to send two teams to the island but before he can do that, the Attack Titan ambushes the ship.

Hange and the others mock the Marleyan soldiers. Earlier, the Survey Corps captured the advance party sent by Marley comprising of Nicolo. The captain of the ship challenge Hange and attempts to shoot her.

However, Yelena betrays the captain and shoots him to death. Half of the Marleyan soldiers on the ship turn against the rest.

Yelena and Onyankopon join forces with Paradis Island. The ninth episode also shows Sasha with the group in flashback scenes. She was killed by Gabi in Episode 8.

"Attack on Titan" Season 4, Episode 10 is slated to air Sunday. The episodes are streaming on Crunchyroll, Funimation and Hulu.

The cast of "Attack on Titan," which is also called "Shingeki no Kyojin," includes Yuuki Kaji as Eren Jaeger, Yui Ishikawa as Mikasa Ackermann, Yoshimasa Hosoya as Reiner Braun, Takehito Koyasu as Zeke, Marina Inoue as Armin Arlelt, Natsuki Hanae as Falco Grice, Manami Numakura as Pieck, Ayane Sakura as Gabi Braun, Toshiki Masuda as Porco Galliard, Yumi Kawashima as Zofia, Ayumu Murase as Udo and Masaya Matsukaze as Colt Grice.