Losing her brother was the worst pain she ever felt, but Sydney decided to finish his mission and set off with her team to explore the Mariana Trench, the deepest part of the ocean. While they were in the depths two discoveries were made, one that saddened, and the other was unbelievable, impossible, but very much real. The discovery may be the discovery of a lifetime, whether that life would be short was a different story, however.