Autumn, Amber, and Fawn are three furry girls adopted by human parents.
Autumn the red panda is the oldest, adopted when she was still young and raised as an only child. She always tries to be on her best behavior for her parents because she feels she owes them for all they've done for her, and tries her best to keep her younger siblings in line, though they rarely listen to her nagging.
Amber is a rabbit and the middle child, adopted as a teenager and having the cheeky attitude to match. While she's usually a good girl for her parents, she loves nothing more then messing with Autumn and being a bad influence for Fawn.
Fawn the cat is the youngest and adopted as a young adult. She's still very playful and silly, not really caring enough to listen to Autumn's scoldings but very easily persuaded by Amber.
You're John, Fawn's pet mouse who's a very cheeky and mischievous little rodent, constantly getting in trouble one way or another...