We’re still a few months away from Aquaman hitting theaters, during New York Comic Con Warner Bros. has just given us our best look yet at the Jason Momoa-led film with a new extended trailer that’s packed with footage from the movie.

Clocking in at a hefty five minutes, the trailer gives us a general overview of what to expect in December, starting with the basic origin story. Aquaman — aka Arthur Curry — is the son of a human lighthouse keeper and the Atlantean queen (Nicole Kidman), making him the rightful heir to the throne. He’ll be teaming up with Mera (Amber Heard) on what’s revealed to be a quest for a legendary trident (likely the Trident of Neptune) to unite the disparate kingdoms of Atlantis. But there are plenty of foes in his way, including Orm, the present King of Atlantis, and Black Manta, an armored mercenary and classic Aquaman foe.

The overall vibe of Aquaman seems to indicate that DC is aiming for a more lighthearted tone compared to its dreary and dark predecessors. Momoa and Heard’s banter, in particular, shows off an almost unheard-of sense of humor for the series. Add in director James Wan’s eye for action scenes (he previously directed Furious 7), and it’s possible that Aquaman may join Wonder Woman in escaping the long shadow cast by years of lackluster DC films.

Aquaman hits theaters on December 21st, 2018.