Тайна острова Роан-Иниш

When a young girl named Fiona, struggling with illness and grief after losing her mother, is sent to live with her grandparents on an Irish fishing village, she teams up with her cousin Eamon to uncover the truth about her baby brother's disappearance and reclaim their family's abandoned cottage on Roan Inish, only to discover that he's been living with the seals all along.