The "boys" find Tokyo just a bit overwhelming. And weird. And they fit right in.

The group visits a geisha house and samurai warrior school in Kyoto, Japan. In Hong Kong, Shatner books a top hotel. Group rents a yacht, has custom suits made and visits an ancient Chinese medicine shop.

In South Korea, the guys visit a K-pop school, where they learn dance moves from the K-pop band Girls Generation and shoot a music video with them. They also stay at an inexpensive spa; visit the DMZ; and eat at a restaurant that serves live octopus.

It's the last leg of their trip and their first stop is Phuket, Thailand, where the five take part in a wild water fight before celebrating Terry's 67th birthday. Jeff takes Terry to get his first-ever tattoo, while William and Henry get bent into all different directions with a not-so-relaxing Thai massage. George takes the gang to watch Thai boxing before stepping into the ring with William, and, later, Terry gets serenaded by a special guest at an unforgettable birthday dinner. Then it's off to Chiang Mai, their final destination, for a luxurious stay at an amazing hotel. In one of the most moving experiences of their trip, they spend the day at an elephant sanctuary and then visit the women and children of the long-neck tribe.

The men go to Munich and immerse themselves in the culture, customs, and traditions of the city, including participating in Oktoberfest, visiting a nude park, and re-creating their own Julie Andrews moment in the Bavarian Alps.

Challenges that aren't for the faint of heart; the world's smelliest dish; an etiquette class; George is surprised by a founding member of ABBA.

A goat beauty contest; a stay in an uncomfortable haunted castle; an unpleasant visit to Russia.

The guys head to Berlin in the hope of finding Henry's roots; they check into a communist hotel, meet a bear, visit the Berlin wall, have a surprise run-in with Al Roker, and are treated to a special performance by David Hasselhoff.

The guys enjoy the culture of Barcelona, Spain; tango dancing; a lunch of traditional Spanish delicacies; Terry shows Barcelona what a full moon in the middle of the day looks like; Henry bares it all as a nude model for an art class.

The guys explore Madrid, Spain; matador lessons; flamenco dancing; an altered version of the Tomatina Festival.

The guys head to Africa, where they explore a local market and have a special dinner, each making one last wish for the trip.

The guys get their groove on with the Gnawa Tribe and bond over a campfire in the Sahara Desert; in Marrakesh, William Shatner treats the guys to lunch before going to hear an authentic Moroccan storyteller; the men reflect over a final dinner.