The Lion King IV: Rise of Anew

Before The Story:

 * Mufasa goes to Kion and sends him on a solo mission. Lions soon forget about him due to more important matters.
 * News of Kion going away went to Janja and his clan, and since the remaining members of the lion guard was busy doing other things, they were able to eat a bit and get stronger.
 * After Kovu and Kiara marry, Janja and his clan attack Simba's Pride by PrideRock.
 * During the attack, Chungu sacrafices himself to end Rafiki's and Zazu's lives, as Makini, Rafiki's apprentice and the sons of Zazu, Zozo and Zoza stare on in horror.