Mr. Morton has fired Henry because he was out of the office when a gorilla escaped from the zoo. But Morton's note to Henry reads (in part), ""A gorilla broke out of his cage with a bunch of bananas."" It's a misplaced modifier that Miss Newton and Henry correct, but not the last mistake. The gorilla shows up at the office, pointing out a misplaced modifier on the sign that stood at his zoo cage. Henry gets the sign corrected. This leads to a surprise for Mr. Morton.