Rona is mischievous, curious, adventurous and inventive - just an everyday tomboy nine-year-old! Living in the country with her grandparents, she pretends to be a werewolf (and breaks her most precious possession in the process), jumps off the wharf like a daredevil, and is alternately cross and friends with her cousin Jessie - in between finding ways to ambush Stewart Simpson, her sworn enemy.