The four remaining teams depart the Pit Stop at Prague Castle on the eleventh leg of a race around the world for one million dollars, with Brian and Ericka knowing they'll be facing a Speed Bump that will take up valuable time in their attempt to make it to the final three.

Lisa decides to walk through the field after getting lost in a game of hide-and-seek, but she discovers three teenage girls who are practicing Wiccans instead. Although Lisa doesn't believe in their spells, the girls convince Lisa into understanding that they never hurt anyone and they ask her to join. However, Chief Wiggum arrives before Lisa is inducted, and Lisa becomes the star witness in the case of the three girls' arrests. Meanwhile, after discovering that they make moonshine, Homer begins hanging out with Cleatus and his hillbilly friends.

When Cleveland Jr. and Roberta go on a school trip, Cleveland and Donna are excited to have the house to themselves. However, Rallo tries his best to keep Cleveland and Donna apart. Meanwhile Roberta's partying gets out of control and Cleveland Jr. comes to her rescue.

Upset that Hayley no longer wants his advice, Stan decides to prove that she is missing out on his sage counseling. After meeting a stripper on an important CIA mission, Stan takes it upon himself to improve her life and show Hayley that his advice works. But when he opens a new business, hoping to prove Hayley wrong, he finds himself dancing for cash to cover up his failures.

In the wake of another unexpected attack, Angie decides the time has come for her and her family to move away from Wisteria Lane. In the meantime, Susan and Bree clash over the latter's affair with Karl Mayer, whereas Gabrielle and Lynette clash over the latter's pregnancy. Meanwhile, Katherine's crazy schemes have brought Mike to a point where he can no longer put up with her, and a heated argument between the two of them has shocking results.

After Brian accidentally kills another dog, and no one seems to care, he tries to convince everyone that they should value the life of a dog the same as a human. Meanwhile, Lois hires a maid who doesn't listen to Peter.

Dexter finally believes he understands the beast known as Trinity. But when a ten-year old boy goes missing, Dexter is forced to question everything he's learned up to this point. It's a race against the clock. And with each step forward, Dexter has to confront the real possibility that he may have more in common with Trinity than he'd like to admit. Secrets abound - from Cody, who is forced to defend one of Dexter's lies, Masuka, who can't bring himself to confess what he witnessed at Thanksgiving, and Debra, whose recent discoveries force one of Miami's finest into making an impossible decision.

Sean Casey's meteorologists finally put him in position for the shot of a lifetime, and this time it's a home run. Reed, Tim, and Josh all score big.

Justin and Rebecca harbor secrets that could break their relationship for good, while Holly's financial crisis takes another bad turn. Meanwhile, Sarah becomes worried and jealous about Nora's romance as she struggles to overcome her own devastating break-up from her love affair with Luc.

When Charlie loses his job, Hank takes him out to town. Meanwhile, Karen, Becca and Marcy have a girl's night out.

On the last chase of the season in Nebraska, Reed and Tim chase multiple vortices. But when an EF-3 monster touches down right on top of Reed's armored research vehicle, Mother Nature shows who really dominates in Tornado Alley.

Natsu caught up to Erigor after breaking through the magic wind wall, but Natsu's flames aren't able to dent Erigor's perfectly controlled wind! Happy figures out wind's weakness, however, and Natsu uses his Dragon Slayer magic to stage a sudden comeback! After Lucy and the others arrive, everything would seem to be safe, but Kage suddenly takes back the flute and heads towards the Guild Masters! It's just one setback after another; can they ever truly stop the lullaby?

Miranda decides to book a holiday but ends up checking into local hotel, Hamilton Lodge. After just over a day in the hotel, Miranda has experienced everything the hotel has to offer. Things become wacky though when she is mistaken for the hotel's visiting seminar leader. Gary finds out where Miranda is staying and comes to see her and ends up getting propositioned by a drunken Miranda who then passes out.

National treasure Stephen Fry drops in for a tweet, the hilarious Bill Bailey takes the comedy chair, Annie Lennox and David Gray provide music and chat, and there is some canine therapy for Graham's pooches with dog whisperer Cesar Millan.