The story of the last Seal Child’s journey home. After their mother’s disappearance, Ben and Saoirse are sent to live with Granny in the city. When they resolve to return to their home by the sea, their journey becomes a race against time as they are drawn into a world Ben knows only from his mother’s folktales. But this is no bedtime story; these fairy folk have been in our world far too long. It soon becomes clear to Ben that Saoirse is the key to their survival.

When a faun named Mune becomes the Guardian of the Moon, little did he had unprepared experience with the Moon and an accident that could put both the Moon and the Sun in danger, including a corrupt titan named Necross who wants the Sun for himself and placing the balance of night and day in great peril. Now with the help of a wax-child named Glim and the warrior, Sohone who also became the Sun Guardian, they go out on an exciting journey to get the Sun back and restore the Moon to their rightful place in the sky.