Legendary English broadcaster David Attenborough narrates this documentary on the northern royal albatross colony at Taiaroa Head, near Dunedin. But the real star of the show is Grandma, a 60-year-old super breeder. In October Grandma arrives after a long spell at sea, where albatrosses spend most their lives. After reuniting with her partner, an egg is fertilised. The albatrosses are monitored by specialist wardens who support the birds' health and keep predators at bay. After 79 days Grandma's 51st descendant hatches, and another extraordinary life cycle begins. Stay on for the postscript after the closing credits.