After enjoy a feast, Timon notices that Pumbaa looks ill with a green color in his skin. Pumbaa says he has never been sick in his life. He says it is probably due to a bad bug. Timon refers to the book "Bugs We Have Dined upon That Have Made Us Not Look So Good" to see if Pumbaa had digested any of them. As the meerkat mentions each bug, Pumbaa feels worse and changes color. He admits that he thinks he might actually be sick. Timon is excited to get to help his pal feel better.
Timon rigs up a contraption to cure Pumbaa, who thinks he might only need to burp. As he examines the warthog, Timon ends up causing even more bodily harm to Pumbaa. After all of the tests, Timon only determines that his friend is sick. Pumbaa suggests that he might need a real doctor but Timon reasons that, since everyone is scared of real doctors, Pumbaa will not be scared of Timon who is not a real physician. Timon accidentally refers to a ship-building book to help Pumbaa, but realizes his mistake and opens the "Miracle Cures" book. When he rushes off to gather ingredients (such as poisonous berries), Pumbaa releases a large, loud burp and feels much better.
Timon returns with all of the ingredients for the cure-all. Pumbaa does not have the heart to tell Timon that he is not feeling bad any more. After a horrifying taste of the cure-all, Pumbaa feels even more sicker and hiccups nasty green bubbles.