But thats not the only adaptation of J.R.R.

Directed by Kenji Kamiyama, this anime film is set to hit theaters this December.

the conflict against Sauron detailed inLord of the Ringsproper.

The Lord Of The Rings: THE WAR OF THE ROHIRRIM

Hera (Gaia Wise) in ‘The Lord of the Rings: The War of the Rohirrim.'.Courtesy Warner Bros. Pictures

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ProducerPhilippa Boyens(who previously co-wrote JacksonsLord of the Ringsfilms) decided to focus the whole story around Hera.

We know Helm has a daughter, and we know that she was central to the conflict that happened.

The Lord Of The Rings: THE WAR OF THE ROHIRRIM

Hera and an eagle from ‘The Lord of the Rings: The War of the Rohirrim.'.Courtesy Warner Bros. Pictures

But myself, and especially screenwriter Phoebe Gittins, were drawn to her,Boyens toldEntertainment Weeklyearlier this year.

How did she live?

The trailer gives us a taste of the answers to those questions.

Watch the trailer above.The Lord of the Rings: The War of the Rohirrimhits theaters on Dec. 13.