On April 20, 2010, an explosion on the Deepwater Horizon oil drilling rig killed 11 people and injured 17 others. Over the course of 87 days, an estimated 4.4 million barrels of oil spewed into the Gulf of Mexico from the fractured well leading to an unparalleled environmental catastrophe. Over a decade later, a filmmaking duo travels back to the Gulf Coast seeking a simple answer. What has changed? 10 Years Over the Horizon is a journey of personal observation, with an eye on the future of the coast dealing with the fallout of the largest marine oil spill in history.