The Magic Tree House whisks Jack and Annie to the decks of that ill-fated ship, the "Titanic". There they help a toddler find her way to a lifeboat before they, themselves, are in grave danger of becoming two more victims of the tragic event.
Eight-year-old Jack, his seven-year-old sister, Annie, and Peanut the mouse ride in a tree house to the Amazon rain forests, where they encounter giant ants, flesh-eating piranhas, hungry crocodiles, and wild jaguars.