The story centers on a green sea turtle named Sammy, who hatches on a beach in California. From the moment he is born, Sammy faces numerous obstacles, and narrowly escapes predators with the help of another young hatchling named Shelly. Separated from Shelly during the chaos, Sammy vows to find her again. While making his way to the ocean, he befriends another turtle hatchling named Ray. Together, they begin an epic journey across the seas and come to understand the wonders and perils of the ocean. As they grow, Sammy and Ray encounter various sea creatures, human activities, and environmental challenges, learning important life lessons about friendship, survival, and the impact of humans on nature.

Over the years, Sammy experiences various adventures including a narrow escape from a fishing net and discovering new underwater worlds. Along the way, he is determined to reunite with Shelly, holding onto the promise of their childhood bond. With each passing experience, Sammy grows wiser and more resilient. As Sammy navigates through tropical reefs, faces fierce storms, and interacts with both friendly and hostile creatures, his tenacity and spirit keep him moving forward. His journey underscores themes of perseverance and the fragile beauty of marine ecosystems. The narrative concludes with a powerful message about the importance of preserving our natural world for future generations.