As the expedition continues through deserts and jungles, the crew faces mounting dangers, including Joe’s temporary disappearance after falling from the balloon. Despite weather threats, tribal encounters, and equipment failures, Ferguson remains calm and resourceful. They push westward toward Saint-Louis on the Atlantic coast. At last, they reach the ocean, concluding their groundbreaking journey. Upon returning home, they are celebrated, having proven the power of science and human perseverance.
