Lisa calls her teacher, Ms. Hoover, a hack and refuses to apologize. Then, she learns Ms. Hoover's private pain.

Cletus becomes a singing sensation, while Homer becomes a new man. Then, Cletus turns on his fans, ruining everything.

A surprise from Marge's past has her bonding with Bart and terrifying Homer.

Bart celebrates the most shocking birthday party of his entire life — one that might just change everyone in Springfield forever.