After Mortimer takes a dinosaur bone from a museum to use in a garbage disposal demonstration, he and Charlie have to travel to the Lost Swampland of Zambogoola to find a replacement.; Mortimer delivers a telegram to the mysterious Misty Island. When he fails to return, Charlie goes to the island, and finds it occupied by several men who are victims of a mist that clouds their minds and makes them forget.; Mortimer writes a story that doesn't go anywhere.; Mortimer has cleaned the hog pen and is sitting in a corner because he "can't stand to get near m'self".; Mortimer has a birthday party for Bessie, his cow.