Unhabbited cerita

A plane crashed into the unhabited island Agafas. Only 15 people survived this crash and they are trying to survive on this island. One of those survivals is James Chamson. James and the others are exploring the island. But they find the strangest things: waterfalls are falling up, the sun that goes up in the north and goes down in the south, some fish can swim in the air, but also weird trees. These trees are big in the beginning, but they are slowly getting smaller. How will the people survive on this island?