The Fall of Mizimu Grove is the fifty-fourth episode of The Lion Guard and the twenty-eighth episode of Season 2.
Scar makes an appearance when Timon and Pumbaa decide to put on a show in Mizimu Grove.
At Big Springs, Basi's Pod is alert after all the recent Outlander attacks, even worrying about Kiazi, a baby hippo swimming in the water. Once Beshte calls a false alarm, the Lion Guard notice Timon and Pumbaa enter the area, chasing down a bug. They leave quickly to chase the bug and Makini arrives to show off a plant root, which will be part of her Mpando Mpaya , an event that sees the planting of a new baobab tree by a Royal Mjuzi. Makini invites Basi and his pod to the celebration, to which he accepts. Kion thinks that this will lift everyone's spirits, and chases down Timon and Pumbaa, asking them to put on a show for them at Mizimu Grove to mark the occasion. Overhearing this, Shupavu and Njano return to Scar with the latest news, who plans on having "a very special guest" arrive.
At the grove, Rafiki makes an announcement with Makini and Simba by his side, and Simba gives his own speech, before Timon and Pumbaa start singing to the gathering of animals. The animals move to the beat, but it isn't long before the Army of Scar arrive, breaking up the party. Using the skills they have learned, the animals fend off the army. Kion tells Janja to look around and to see that the Outlanders are loosing when Rafiki's Tree breaks down and reveals Scar himself.
Scar warns the animals of his plan and disappears. Simba wipes away the Mark of Evil left behind, but this is not enough to prevent the animals from scarpering in all directions. Kion uses the Roar of the Elders to blast the Outlanders away. Simba stays behind to chat with Ma Tembo. The Lion Guard work together to stop the herds, but Makini cries over the loss of Mizimu Grove. Once the herds are all calm down they wonder why Kion never told them about Scar. Simba says that the Lion Guard were following his orders. The herds all start to think about leaving the Pride Lands, because they don't feel comfortable in this place anymore.
That night, Kion contacts Mufasa, asking for help. After learning something about the land, he returns to Pride Rock, where Simba makes a tough announcement. Before he goes through with it, Kion arrives with his newfound knowledge.
They return to Mizimu Grove where Kion shows to everyone that Makini's little plant seed survived the attack. That restores the hope, that together all animals can make it through such hard times. Fuli, sings Timon and Pumbaa's song while Makini plants her baobab tree. The Pride Landers celebrate restoring their spirits and no matter what happens, the Pride Landers decided to stay.