Simplify the following text for a Grade 5 native English-speaking person.
Original: 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 .
Simplified: In the morning , Simba invites Kovu for a walk and tells him the true story of Scar , which Kovu had never heard .