Grayson is the true story of a remarkable encounter between long-distance swimmer Lynne Cox and an 18-foot baby whale named Grayson. This miraculous ocean adventure unfolds when Lynne, in training for a big swim, finds herself swimming alongside a young gray whale.

In the darkness of early morning, Lynne was in 55-degree water, two hundred yards offshore. As she was swimming her last half-mile back to the pier, she realized something was swimming with her. The ocean was alive with energy, as thousands of baby anchovies darted through the water, evading a larger presence. It wasn't a shark, as Lynne feared, but a baby gray whale following her.

Lynne had been swimming for over an hour and needed to rest, but if she left the water, the baby whale would follow her to shore and risk dying from collapsed lungs. The young whale was on a three-month migration to the Bering Sea and needed its mother's care to survive. Lynne embarked on a quest to reunite Grayson with his mother in the vast Pacific Ocean.

This captivating tale blends mystery and magic, unveiling the bond between human and whale amidst the vastness of the ocean.