Scene: If You Want Him, Come and Claim Him!

In the fellowship of the ring, Arwen rides with Frodo, chased by the wraiths. They reach the river of Bruinen. Arwen crosses and the wraiths are initially reluctant but make their way into the water after Arwen challenges them. She activates the protective spells and the waters take the form of horses to stop the nine riders and allow Arwen and Frodo to escape.

This model tries to capture the waters as they engulf the wraiths. It shows 3 wraiths in varying stages of the waters overcoming them, as Arwen watches on with the stricken Frodo across her horse.