The wealthy British family, the Bowmans, visit the isolated island of Isla Sorna for a vacation. They moor their boat on the beach of the unknown island to enjoy a picnic under the sun and by the sea. However, their young daughter Cathy, who is tired of her parents' constant arguing, decides to embark on an adventure of her own after discovering a "little bird" that serves as her guide through the uncharted tropical landscape. Cathy's journey takes her on an exciting quest through a lush rainforest and the ruins of an abandoned village, where she hopes to fulfill her dream. But will this courageous girl find the adventure she's been looking for, or will she encounter something unexpected?