Fairies, pixies, selkies… Ireland's myths are awe-inspiring. …Unless they're trying to kill you.
When Fionn and his family are suddenly targeted by these creatures, they are struck by everything but awe.
Sirona is not able to enter Grannus' realm without a human host, but getting possessed by a god could lead to a painful death. Aidan and Púca step in to set a trap for Grannus. Will the god fall for it? Fionn has to make a decision…