Twins Bri and Ari are thrilled to be reunited with their parents. Their parents have been studying sea turtles on the Solomon Islands in the South Pacific for months. But once they get to the research station, life gets boring fast. Bri and Ari just want to go exploring and have some adventure. But when they finally get permission to travel by themselves to a nearby beach, they are swept away to a strange island full of dangers both seen and unseen. Will they be able to survive?