As established in The Lion King II: Simba's Pride, there was a whole sect of the pride who still supported Scar, led by the lioness Zira. These supporters were banished from the Pride Lands by ...
What she and her parents do not know is that Kovu is the son of Zira - a banished follower of the now-dead Scar. She plans to raise Kovu to overthrow Simba and become the king of the Pride Lands.