Sly Cooper, together with his loyal friends Bentley and Murray, has just completed his latest heist when he is overcome by alleged amnesia and goes off with his female pal Carmelita, leaving Bentley as the keeper of the treasured Thievius Raccoonus, the Cooper family's ancient book of master thievery. When Bentley discovers that pages of the book have begun to disappear in front of his eyes, he must round up the gang and save the Cooper Clan legacy from being destroyed forever.