On the Nighty planet strange things happen to the lights of the Lighties! Lily decides to get help from a fairy friend of hers ....The fairy tale takes place in a fantasy world with "alien" characters (the Lighties) who live on a strange planet (the Nighty planet) struggling with a virus that resembles the coronavirus. The main character is Lily, a little girl from Lighties, who will find a way to fight viruses. This is a fairy tale born during the lockdown period in Italy, thinking of grandchildren Vittoria and Ettore, 4 and 2 years old, who were perhaps wondering to themselves why everyone's life had changed so much, while not putting into words their doubts. It wants to give the opportunity to make comparisons with reality and to be able to ask adults questions about what is happening to the characters, respecting everyone's times and abilities, and finding a way to face the situation they are living during Coronavirus pandemic, without too much anxiety. The text is accompanied by images drawn by the author