Six couples travel to a mysterious beach to confront challenges and compete for a grand prize, unaware that their mothers-in-law are also present.

Severina and Thy open up. A family therapist meets the competitors. Two participants have a heated argument over who owns an apartment.

Taninha becomes suspicious of Thy and Severina. The bunker team discovers the emergency button. Two contestants contemplate leaving the experiment.

The emergency button is pressed. Thy opens up about his strategy, but the results don't go as planned. Unexpected guests visit the village.

A new challenge shifts family dynamics forever. Shenia has a highly emotional chat with the in-laws, while the bunker team gets thrilling news.

The in-laws have fun talking about their love lives. Someone presses the emergency button. Felipe and Severina bond — but not everyone approves.

The Tenórios strategize after the emergency button is pressed. Felipe becomes disappointed with his team, and a secret about the grand prize is revealed.

One of the families secures their spot in the final challenge. Before the end, in-laws must make a dramatic decision about the big prize.