Sly Cooper is a master thief that comes from a long line of master thieves. One day, his house is attacked by a group known as the Fiendish Five, who killed his father and stole the Thievius Raccoonus, the book kept by his family that detailed all of the exploits and skills of the Cooper family.
While the book was split into five pieces, each member of the Fiendish Five getting a section, Sly was sent to orphanage. It was there that he met Bentley and Murray, whom would become his best friends and partners in crime. They formed the Cooper Gang, going on countless heists. When Sly learnt of the whereabouts of the Fiendish Five, he makes plans to take them all down and retrieve his family's book and his heritage.