Luna has been living freely on the Moon Island for her entire life. Her only concern is the unusual scar behind her windows, in the shape of a quarter moon that shines every full moon. Luna then has a very bad headache and feels like she's constantly running out of air. Shortly after the great tragedy for the young raptor, her human friend, who took care of her when she was little, brings ships of unknown origin to Luna to the shores of the island. Luna and her best friend get on one of them to see where it will take them. Luna also has a strange feeling that thanks to this she will be able to find out the meaning of her strange scar.