To fix the world they must first break it, further.
Humanity is a dying breed, utterly reliant on artificial labor and service.
When a domesticated robot gets a nasty little idea downloaded into its core programming, they murder their owner. The robot discovers they can also do something else they never did before: They can run away.
Fleeing the household they enter a wider world they never knew existed, where the age-old hierarchy of humans at the top is disintegrating into ruins and an entire robot ecosystem devoted to human wellbeing is having to find a new purpose.
Sometimes all it takes is a nudge to overcome the limits of your programming.