Bay to Baltimore follows ultramarathon swimmer and artist Katie Pumphrey as she embarks on a groundbreaking journey to become the first person to swim 24 miles from the Chesapeake Bay Bridge to Baltimore?s Inner Harbor, a body of water once well-known for its pollution. The film explores Katie?s physical endurance and her personal connection to the water, spotlighting the transformation of the Inner Harbor, which has been deemed safe for swimming after years of conservation efforts