Scallop and Mussel plan a day trip to visit the monastic ruins and lakes of Glendalough. They take the bus there and their guide O'Connor shows them historic sites like cathedrals and round towers. Along the way they see wildlife and learn the history and legends of Ireland, such as how St. Patrick used the shamrock to explain the holy trinity. After their tour, they discuss visiting the nearby city of Kilkenny to see its castle and medieval abbey before flying home to Galicia from Cork airport.