The Lion King, but the parallels created between her character, Mufasa, and Simba can be paid off in the future.
There she meets a lion cub named Kovu and they become friends ... Kovu to overthrow Simba and become the king of the Pride Lands. This tests not only Kiara and Kovu's relationship as they mature ...
To that end, the only reason the Pride Landers and Outsiders reformed years later was through the efforts of Kiara and Kovu ...