Steve is cleaning out his fake grandpa's apartment at the retirement home when an old friend, Gretchen, drops by. They briefly share memories, then start making out. That night, Francine is frustrated by Stan's unabashed admiration of his father. At the same time, Roger is raving about him to Hayley. Roger is developing quite the crush.

The next day, Jack tells Stan he's retiring and asks Stan to take his place. If he can help Jack complete one last mission in Langley Falls, the job is Stan's. Jack goes over the mission with Stan. They have to break into the National Gallery of Art because terrorist have smuggled uranium into the country inside Egyptian artwork. Jack and Stan have to get the uranium before the terrorists do.

The FBI drops by the Smith household. Francine answers the door. They tell her they're looking for a jewel thief. Jack fits the physical description perfectly. Later, while Stan is exercising outside, Francine confronts Jack about his real identity. She says if he doesn't Stan the truth, she will.

Meanwhile, Steve tells his school friends about his torrid affair with Gretchen. At home that night, Stan tells Francine that Jack told him the truth. Francine's a spy. Stan tasers her and jails her in a Plexiglas box in the basement. Steve drops by the retirement home for another bout with Gretchen. But when he gets inside, he sees Snot's jeans hanging on a chair. Steve is heartbroken.

Jack and Steve begin their break-in. And Roger finds Francine in her clear jail. He's about to let her out when she says Jack told Stan she was a spy. Roger's mancrush kicks in and he leaves Francine in the basement. Back at the museum, Jack and Stan break into the vault. Stan starts looking for the uranium, but Jack just collects valuables. Stan realizes Francine was right. He tells Jack he's not going to run off to an island with him. Jack locks him in the vault and takes off.

Stan escapes from the vault and finds Jack outside. A chase ensues. Stan catches Jack before too long. Jack apologizes, so Stan takes the jewels and him free. Stan rushes home and apologizes to Francine.