Russell Howard travels to the coastal town of Lahinch, County Clare, where he joins a group of Irish extreme surfers - adrenaline junkies who live for the waves. Their surfing lifestyle is extreme, with freezing water, rocky coastline and 60ft high waves. After being taken under their care and introduced to all aspects of their world, will Russell understand what makes them tick - and can he perform a stand-up gig so high-octane it will make these hardcore surfers actually laugh?