Springfield’s merry mischief-maker, Bart Simpson, switches places with Ralph Wiggum on “Take Your Son To Work Day” with surprising and potentially life- threatening results. Then, Bart gets a new roommate when he moves into the retirement home with Grampa. Also, Bart and Nelson start their own pirate radio station, and it is not long before radio talk show host Birch Barlow’s ratings begin to plummet, prompting a "no holds barred" battle over the airwaves.