Free diving was once a means of gathering food. It's now an extreme sport in which the human body is pushed to record depths, and sometimes to the point of blackout, while diving on a single breath of air. We followed Annabel Briseno, a 52-year old grandmother, on her week long quest to break world records in four free diving disciplines. The story is both jubilant and harrowing. As the week unfolds it becomes clear that a world record in free diving is a precarious agreement of mind, body and sea that sometimes collapses violently. The serene beauty of high definition underwater footage is juxtaposed with the dangers of a sport in which the body must utilize survival reflexes to succeed. In the end, Annabel's story is one of camaraderie and trust, not only with fellow divers, but with the sea. Written by William Kearney