In the world of Vulpine Valley, a lush forest teeming with secretive pathways and ancient treasures, there lurks a cunning fox named Grizelda. Her parents, the legendary master thief Sly Cooper and the fierce law enforcer Carmelita Fox, were heroes of a bygone era. They died heroically, protecting the valley from a malevolent force that sought to destroy its natural beauty and plunder its hidden riches. Their daughter, however, took a darker path.