Necrolai and Leelee trick the Rangers into breaking the seal on a cave containing an evil mummy, who becomes the new baddie in charge of the Underworld Pit! But the Rangers also discover a new and powerful ally, when they find a lamp containing the white cat-man known as Jenji the Genie. Can he help against the might of Imperious? Meanwhile, Phineas is suffering from a toothache, and enters the human realm to seek a dentist. He winds up escorted by Toby, and hilarity ensues!