Visiting a Cameroon tribe claiming to have the world's happiest marriages, PJ undergoes a ritual possession. Tim builds a love shack and gets sick.

Indonesia’s Sasak people show Tim how to fight like a love warrior. PJ publicly praises his machismo but privately rolls her eyes.

In a Papua New Guinea village, Tim and PJ undergo fertility rituals that include sacrificing a pig and locating an egg that could reveal their future.

The couple treks through Mongolia with nomadic herders. Worn down by the grueling climate, PJ wonders if her engagement to Tim is a mistake.

Jealousy flares when PJ teams up with a handsome member of Nigeria's polygamous Wodaabe tribe, prompting Tim to face some hard truths about himself.

In China, a negative horoscope reading drives Tim and PJ to prove their commitment. Pivotally, PJ must deal with her painful past and learn to cry.

Tim and PJ bicker while visiting a spiritual community in Brazil. To reconnect, they go down the Amazon to a sacred tree and Tim takes a hallucinogen.

Haunted by Tim's bad trip, the couple visits the tropical island of Yanaba, where villagers have planned a wedding. Will PJ leave Tim at the altar?