The Missing Fox's Friend (S03E04)

As Bully's rat population swells, the number of vanished animals rises alarmingly. When Dash spots Plucky being carted off in a cage to a truck, she resolves to track it down, only to find herself blocked from entering a strange facility enclosed by tall walls and spiky gates. Meanwhile, the Weasels seek refuge at a farm, but the local animals refuse to welcome them. Just when things look bleak, they are joined by a new ally, Rollo the Sheep Dog, who steps in as their Protector.