The Derry Girls actress abandons her electric bike for a hydrobike to explore the island town of Enniskillen. She descends underground to experience the caves of a National Geopark, steps closer to heaven on the Cuilcagh Mountain Boardwalk, goes native at the Beaghmore Stone Circles, discovers the ancient monuments of Lough Erne, and meets a man about a sheepdog in the spectacular Sperrins.

The actress visits the Mourne Mountains, bowled over by the natural beauty of the region. She meets a fascinating moth expert in Murlough Bay, discovers the joys of sea swimming in the resort town of Newcastle, has an astronomical time at the Armagh Planetarium and encounters some masked mummers.

Siobhán begins by discovering some hidden gems in Co Down. Siobhán follows the footsteps of pilgrims along Saint Patrick's Way, comes face to face with some vicious Vikings, gets a bird's eye view of stunning Strangford Lough and reveals her artistic side with acclaimed artist Colin Davidson. She also samples regency life in an 18th-century mansion, and, in Belfast, conquers her fear of heights at one of the city's iconic landmarks.