The series follows a 7-year-old girl named Lucy who lives next door to a Zoo at 64 Zoo Lane. Each night, she is told a story by the animals. Characters include Georgina the Giraffe, Nelson the Elephant, Tickles and Giggles the Monkeys, Boris the Bear, and Molly the Hippopotamus. The programme emphasizes friendship and responsibility. At the story's end, friendly morals are discussed, then bedtime is declared.