The plight of the world’s Fair Folk is matched in microcosm within the fate of a family whose idyllic seaside life has been wracked by grief at the loss of its matriarch, the gentle selkie Bronagh, who died and disappeared into the ocean the night she gave birth to daughter Saoirse. Left behind with only the memories of her Gaelic lullabies and his handwritten book of bedtime stories of the fairy realm to continue feeling close to his mother in her absence, ten year old Ben blames his little sister for taking her away from him as their father, Conor, sinks into despair. When the children are sent to live with their domineering grandmother, Ben runs away and is swept into magic straight from his mother’s stories as he must overcome not only a perilous journey to his lighthouse island home, but his own grief and inner turmoil to save Saoirse by returning her to the ocean, so that she can gain her voice and sing the fairies home to Tir na nÓg, freeing them from Macha’s curse which has frozen them in stone.