After the Orville crew defeats a Krill attack on a brand-new colony, the Union sends Ed and Gordon on a dangerous undercover mission to infiltrate a Krill ship and obtain a copy of the Krill bible, the "Anhkana," to better understand the enemy.

Ed and Kelly consider the possibility of reforging their relationship, but Kelly soon crash-lands on a planet in another universe with Isaac and Gordon.

Ed and the crew race to save a small group of survivors on a planet about to be destroyed by its sun. Meanwhile, Bortus and Klyden start marriage counseling when Bortus' obsession with the ship's simulation room gets out of hand.

Ed discovers that Moclans aboard The Orville are harboring a secret.

The Orville crew leads a Union delegation to sign a peace treaty with the Krill.

The crew must rescue Gordon from a distant yet familiar world.

The crew visit Haveena's sanctuary world and embark on a journey that may leave the Union more vulnerable.

The creation of a powerful new weapon puts the Orville crew — and the entire Union — in a political and ethical quandary.