Mariah is a lonely, motherless girl. She lives with her fisherman father on a tiny island in Massachusetts. Shunned and mistreated by others, she often wanders to the far side of the island, where the seals live. It is there that she lifts her beautiful song high above the waves. When a mysterious voice beckons her to the sea one morning, her life begins to unfold. She finds that love takes many shapes and forms and is found in the most surprising places. It transforms the lives of everyone around her, especially her own.