When Bunga the honey badger is bitten by Ushari the cobra, the Lion Guard take him to Rafiki's Tree in the hopes that Rafiki will be able to cure him. Rafiki soon descends to investigate the honey badger's wound. Whilst there, Rafiki informs Bunga that he is in fact immune to snake bites, which causes Bunga to assume that he's immune to everything else, too.
Rafiki tells a group of youngsters, including Young Rhino and Mtoto and the Lion Guard, the tale of a legendary creature known as the Zimwi under his tree. His story is interrupted by Beshte's bellowing which annoys him, but he soon continues his story. Although Kion believes that the Zimwi, Rafiki does not reveal his own belief on the matter. He shoos the children away, telling them to go to bed before retiring himself.