Tír na nÓg is a grand tale of Oisin and his adventures with Niamh, after a fall in the woods Oisin finds himself in a strange land. Completely lost the only person he comes across to help him is Niamh. She shelters and feeds him, but soon afterwards Oisin wishes to go home. However the only person who can help him – Niamh, is reluctant to let the young warrior go. Eventually Oisin arrives home but things have changed and Oisin longs to return to Niamh, but will Oisin find his way back into the loving arms of Niamh?