The plot of the story is grounded in situational irony, a conflict between ordinary folks on the one hand, and both chance and evil on the other. The forces of chance are built up by an almost overwhelming set of coincidences that lead in a straight line to disaster. These are:a. the decision to go to Florida,b. the decision of the grandmother to go too even thoughshe says at first that she will stay home,c. her hiding the cat in the car because she doesn’t wantto leave it behind,d. her remembering the house she wanted to see, and excitingthe children by making up a “secret panel” (paragraph 45),e. her realization of her error just at the wrong moment,f. her upsetting the basket with the cat in it,g. the cat’s jumping on Bailey’s neck, thereby causingthe wreck that makes the family vulnerable, andh. the Misfit’s being nearby when the accident occurs.