Nanu, penguin chick is facing her first winter in the harsh, icy conditions of the Antarctic. Her parents care for her and she flourishes but as the weather gets worse they must go off foraging for food, leaving Nanu alone for a while. Her parents are threatened by leopard seals and only just escape, whilst Nanu is attacked by two hungry skuas. Nanu's fiercely protective parents manage to save their chick - and see her through her first winter.