AceShowbiz - Warner Bros. Pictures and DC Entertainment are generous enough to share an extended sneak peek of "Aquaman". Clocking in more than five minutes, the new trailer shares a lot of never-before-seen scenes, including a longer look at Jason Momoa's Arthur Curry and Amber Heard's Mera at the cave, where they learn about the power of the Trident of Neptune.

The event that follows next shows Black Manta and his robotic army chasing Arthur and Mera. There's also a glimpse at Mera convincing Arthur to live up to his fate as the Atlantean hero. Meanwhile, Arthur's half-brother Orm (Patrick Wilson) is determined to unite the seven underwater kingdoms and declare war on the surface world.

A flashback scene additionally shows Arthur's mother Queen Atlanna (Nicole Kidman) being pregnant before leaving Arthur to the boy's father. Another scene shows her fighting against some villains, who are apparently sent from the other world.

At the end of the video, Arthur stands tall in Aquaman's classic costume while holding his Trident.

"Aquaman" follows half-Atlantean and half-human Arthur Curry, who was born to a lighthouse keeper (Temuera Morrison) and a runaway Atlantean Queen Atlanna. Raised on the surface, Arthur discovers his connection to undersea life as a kid and uses his powers to fight undersea pirates as an adult.

When Arthur's half-brother King Orm is about to declare war on the surface world, Mera, a princess of Xebel, one of the seven underwater kingdoms of Atlantis, finds him to convince him to claim his throne as the King of Atlantis. Initially reluctant, Arthur agrees to challenge King Orm to protect his "home" and the people he loves.

James Wan serves behind the lens, with Will Beall writing the script. Also starring Willem Dafoe as Nuidis Vulko, Dolph Lundgren as King Nereus, and Yahya Abdul-Mateen II as David Kane a.k.a. Black Manta, the movie is due out in the U.S. on December 14.