During ancient Hawaii's warring kingdoms era, chief Ka'iana journeys abroad to understand the foreign invaders threatening his homeland. He returns to lead a violent campaign to unite the four rival kingdoms, hoping to protect them.

Ka'iana arrives in a strange land. Ka'ahumanu takes her place beside Kamehameha.

A dangerous power struggle emerges in the Kingdom of Hawai'i. Kamehameha wrestles with his new responsibility. Ka'iana searches for Tony.

Ka'iana returns with a warning, and a dangerous competition will determine his fate in Kamehameha's council. Keoua sends a message.

Kupuohi tries to keep the hope of peace alive as the drums of war grow louder. Ka'iana questions Kamehameha's leadership.

A disagreement erupts about how to deal with the arrival of outsiders.

After his worst fears come true, Ka'iana suffers a devastating loss. Keoua's call to war becomes unavoidable for Kamehameha.

A great battle arrives as Ka'iana and Kamehameha lead their army against the combined might of Maui and Keoua.