How the Tuatha Dé Danann helped the Fianna to defend Ireland against Daire Donn and the world's armies

A bit of reading (and insight) from the story of the Battle of the White Strand, and in particular how the Tuatha Dé Danann help the Fianna in the defence of Ireland against Daire Donn, the High King of the Great World, and all the armies that have gathered off the coast with the aim of taking Ireland.