While we still don't know much about Warner Bros' "Aquaman," but director James Wan is ready to reveal the tone -- or, rather, "the spirit" -- of the 2018 solo film.

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"I kind of don't want to give too much away but know this: The spirit that I'm going for is like a classic sort of swashbuckling action adventure, sort of high seas adventure story," he told "Entertainment Tonight" at the Australians in Film Awards Gala. "It's ultimately a quest story in the spirit of 'Raiders of the Lost Ark' meets 'Romancing the Stone.'"

Those 1980s cinematic touchstones, which successfully blended high-stakes drama with humor, will undoubtedly please those fans who were critical of the dour tones of "Man of Steel" and "Batman v Superman: Dawn of Justice," and heartened by the lighter touches of the teasers for "Justice League" and "Wonder Woman." It perhaps also signals that Wan's Aquaman won't necessarily be the grim sea king sometimes portrayed in DC Comics titles.

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However, the director's brief comments also raise a major question: What's the nature of Aquaman's quest? Is it a continuation of the "Justice League" story, involving Motherboxes, or something completely unrelated? One theory has already surfaced, centering on the Trident of Poseidon, but of course the search may not be for an object at all but rather a person.

Starring Jason Momoa as Aquaman -- who, judging from the "Justice League" set photos and video, would enjoy the heck out of a high-seas adventure, the film also features Willem Dafoe as Vulko and Amber Heard as Mera. "Aquaman" opens July 27, 2018.