Barra is in Greenore, on the shores of Carlingford lough. He’s here to meet local man Shane Reenan to help solve the mystery of where Finn, a solitary bottlenose dolphin that has taken up residence in the lough, has come from. Barra then heads to Carlingford, where he hitches a ride out onto the lough at low tide to work on the oyster beds. Finally Barra heads to the Ring of Gullion where he meets Caóilfíonn Murphy O'Hanlon, an artist passionate about celebrating and protecting our only native goat, the Old Irish Goat.

Barra is in Clogher Valley meeting farmers Roger and Elaine who tend to over 100 alpacas. Roger explains to Barra why alpaca fleece is so highly regarded. Barra is then put to work, helping to determine if several alpacas are pregnant, and gives another one a bit of a haircut.

Barra is in the north west, and begins in the species-rich dunes of Umbra nature reserve. He meets Andy Crory, maverick moth recorder for Northern Ireland, on an overnight moth survey in the dunes. Andy successfully encourages Barra to face his fear of moths, and shares his passion for these often misunderstood insects.

Barra Best is in his home town of Belfast, where he takes a boat ride through the busy docks with Dr Justin Judge, a local marine biologist. They search for a local colony of seals who have made their home on the banks. Barra is blown away by the number of seals and their closeness to the city centre.

Barra is in Boho,where he pops by to meet Mary Polizzi. Originally from Zimbabwe, Mary rescues and rehabilitates wild animals from across Northern Ireland. Barra is quickly put to work rounding up house martins, before lending a hand with some other animals that have come into Mary’s care.