After a tsunami earthquake causes a crack in the Earth’s crust, two mermaids, Meenanoot and her older sister Massaya, emerge from the sea. Beautiful, innocent, and curious about the human world, they cross paths with Dr. Thara, a marine biologist, and his son, Chonatee, a marine science student. While conducting research, Chonatee falls into the sea and begins to drown. In a desperate search to rescue him, Dr. Thara is stunned when he spots a shimmering mermaid in the water. This encounter leads both father and son to believe in the existence of mermaids.