Once upon a time, Oisín and the Fianna were out hunting.They saw a beautiful girl riding a white horse. "What is your name?", asked Oisín.
"My name is Niamh", she said."My father is the king of Tír na nÓg". She fell in love with Oisín."Come with me to Tír na nÓg", said Niamh.Oisín went with her on the white horse.
They crossed the sea to Tír na nÓg.Oisín was very happy in Tír na nÓg.He had a very pleasant time there.
300 years passed.Nobody got old or sick in Tír na nÓg.But Oisín got lonely:"I want to go back to Ireland to see Fionn and the Fianna again"
"Alright", said Niamh."Bring the white horse with you.But don't set foot on land in Ireland!"Oisín crossed the sea back to Ireland.
But the country had changed a lot.Fionn and the Fianna were dead. Oisín was very sad."I'll go back to Tír na nÓg",he said.
He saw a group of men working in the field. He went down and moved the rock. But he fell to the ground. The horse ran back to Tír na nÓg.
Oisín grew very old.He was over 300 years old!The men took him to meet St. Patrick.Oisín told him about Fionn and the Fianna.He told him about Niamh and Tír na nÓg.Then Oisín died.