Chapter 1: Duncan found a hammerhead shark during the trial, so the people on board caught it and killed it. Because sharks eat everything, they are going to gut it and see what's inside. As a result, they found a bottle.

Chapter 2: The bottle was broken, and the owner, Sir grina Van, found three letters in it, one in English, one in French and one in German. The contents of the three letters are the same, but they are vague, so read the words that can be seen clearly one by one. The general content of the letter is:1On June 7th, 862, Great Britain sank in Patagonia. Captain Grant and two sailors hurried ashore and were caught by the local savage Indians, so I left this letter, hoping to help. With these three letters and their explanations, Sir grina Van asked the British government to look for Captain Grant and the two sailors.