The class is now full swing into their term at Blackrod Primary School, but a few members of class 6M are beginning to test the boundaries. Jonny admits he likes trouble, disregarding the school uniform regulations and not doing his homework, resulting in him been sent to the head teacher's office. But is there more to Jonny than meets the eye? The oldest of the class, 70-year-old grandad Bill, has a special relationship with his two grandchildren, looking after them several days a week with his wife after their mother died of cancer. He struggles with some aspects of the academic work, but is determined to do well so he can help with his grandchildren's homework. He reveals at primary school he suffered from a bad stammer, and appreciates the supportive environment at Blackrod. At the school's summer fayre, every class competes in a sales competition, with class 6M setting up a milkshake and mocktail bar, which gives troublemaker Jonny an opportunity to shine.