David Tennant narrates a behind-the-scenes look at the Royal Aberdeen Children's Hospital. In this episode, ophthalmologist Mr Scott needs all his surgical skill as he battles to remove a stubborn cataract from three-year-old Oscar’s eye. Six-year-old Kayla keeps falling over and physiotherapist Emily checks to see whether her arthritis could be affecting more of her joints. Four-year-old Jack has had a liver transplant and needs regular blood tests, but he is terrified of needles. And play specialist Maureen devises a clever plan to help Jack overcome his fear.