Jason Momoa as Kaiana, with Luciane Buchanan, Temuera Morrison & Cliff Curtis, who plays whom and where to watch on Apple TV+.

At the start of Chief of War, Ka’iana is living in exile with his family, including his half-brothers Namake and Nahi, his wife Kupuohi, and his sister-in-law Heke. Soon, he becomes the first chief to travel outside Hawai‘i, before he returns to ally with Kamehameha in his mission to unite the islands.