The adventure begins in Vietnam where intense rain makes everything more difficult. The couples face their first trials and errors.

The contestants arrive in Hanoi, where they compete for the first immunity. Tensions start to surface, leading to a frantic race to the finish line.

Fatigue begins to affect the pairs, causing the first friction. The black flag arrives and the fate of any adventurer can change at the last moment.

The pairs face physical challenges in rice paddies and torrential rain. An accident threatens one pair's chances as night falls and desperation grows.

The first stage in Laos begins with a Buddhist ceremony. Alliances are tested and the immunity winners make the race even tougher.

An unexpected change of partners unleashes chaos. The pairs face a physical and emotional challenge that pushes them to the limit.