Nim lives on the most beautiful island that could ever be found in the turquoise waters of the Pacific Ocean. This is her home, her faithful friends Selkie and Fred. And of course Jack, Nim's father. He is a scientist and from time to time he goes for a couple of days on a yacht in the ocean to study plankton. On such days, Nim remains completely alone on the island - after all, she can handle all the usual island affairs. Harvest coconuts from a palm tree using a machete, light a fire with a piece of glass, water the garden and take readings from weather instruments. In addition to palm trees, a hut and a vegetable garden, Nim on the island has an email to communicate with the outside world and a cell phone to contact his father. But one day Jack did not call from the yacht. And the next day too. She begins to be overcome by bad premonitions, and the ensuing correspondence with the famous writer, a real hero and brave traveler Alex Rover helps her to escape from them! And when trouble seems very close, all her friends come to her aid. And it doesn’t matter that Fred is a spiny iguana, Selkie is a sea lion, and Alex Rover is not at all an adventurer or a woman at all.