Bob tells Linda and the kids the story behind an old, broken radio that used to belong to his grandmother Alice and the part it played in her discovery that a German spy lived in her building.
After Brian's Instagram is hacked, Meg takes Stewie and Brian to Russia, only to realize she'd rather stay there. Meanwhile, Lois reverts to her tormented teenage self when Quagmire starts dating her high school bully.
After an inmate opens fire at a high-security prison, the task force investigates a contraband smuggler known as The Postman. Cooper revisits his past ties to the suspect.