![Lembit Ulfsak](http://image.tmdb.org/t/p/w92/kPLqsrsv04bZIyYY2b8cOFFCO10.jpg)
Lord and Lady Glenarvan found a bottle in the ocean. this bottle contained a letter from captain Grant that he and 2 of his sailors had survived a disaster in sea and need help. Unfortunately, the letter was damaged by water, and only latitude is known (37 degrees), but no longitude. The Glenarvans decide to find captain Grant.