Last month, Disney unveiled the full voice cast for their new animated adventure Moana. We had already known for some time that newcomer Auli'i Cravalho will voice the title character, with Dwayne Johnson voicing the demi-god Maui. Today we have a teaser that not only features new footage, but gives us our first look at a new character known as the Lava Witch. We're not sure who is voicing this character, but we do know that our next glimpse at this movie will happen in just a few short days.

Walt Disney Pictures unveiled this video on Twitter, revealing that a sneak peek of Moana will air at some point during NBC's Olympics coverage on Sunday, August 7. Unfortunately, no specific time was given for when this sneak peek will air, but we'll be sure to bring you the full video as soon as it arrives. This animated adventure is set to hit theaters November 23, going up against 20th Century Fox's Rules Don't Apply, The Weinstein Company's Bad Santa 2 and Paramount's Allied.

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Three thousand years ago, the greatest sailors in the world voyaged across the vast Pacific, discovering the many islands of Oceania. But then, for a millennium, their voyages stopped - and no one knows why.  From Walt Disney Animation Studios comes Moana, a sweeping, CG-animated feature film about an adventurous teenager who sails out on a daring mission to save her people. During her journey, Moana (voice of Auliʻi Cravalho) meets the mighty demigod Maui (voice of Dwayne Johnson), who guides her in her quest to become a master wayfinder.

Together, they sail across the open ocean on an action-packed voyage, encountering enormous monsters and impossible odds, and along the way, Moana fulfills the ancient quest of her ancestors and discovers the one thing she's always sought: her own identity. Directed by the renowned filmmaking team of Ron Clements and John Musker (The Little Mermaid, Aladdin, The Princess & the Frog) and produced by Osnat Shurer (Lifted, One Man Band), Moana features a stellar supporting voice cast. Jemaine Clement provides the voice of Tamao, a self-absorbed, 50-foot crab who lives in Lalotai, the realm of monsters. The conceited crustacean wants to be more than a "bottom feeder" and overcompensates for this perceived shortcoming by covering himself in all things shiny.

Rachel House lends her voice to Gramma Tala, Moana's confidante and best friend, who shares her granddaughter's special connection to the ocean. Temuera Morrison voices Moana's father, Chief Tui, the gregarious and well-respected leader of the people of Motunui Island. Nicole Scherzinger voices Moana's mother, Sina, who always has her daughter's back. Alan Tudyk is behind the voice of HeiHei, described as a "dumb rooster" and "the village idiot." Take a look at this new preview for Moana and check back Sunday for the full sneak peek.