Naturally Sadie follows the adventures of inquisitive 13-year-old Sadie Hawthorne. Sadie is a junior high school student and an aspiring naturalist who loves to study and observe animals and their behaviour in their natural environment. Her desire to study and observe is not limited to animals as she attempts to analyze human beings the same way. Sadie soon discovers that this is difficult because behaviourally, we are all unpredictable.