BLAME IT ON RIO

Businessmen Matthew Hollis and Victor Lyons are best friends and colleagues who work in São Paulo and are preparing to go on a vacation to Rio de Janeiro with their respective teenage daughters, Nikki and Jennifer, and Matthew's wife Karen. Victor is going through a divorce, while Matthew's marriage has become strained. At the last minute, Karen announces she is going to Bahia by herself instead. Matthew and Victor ultimately arrive in Rio with their daughters, settling into a rented house. Jennifer and Nikki share a room, where Jennifer confesses that she used to have a crush on Matthew. On the beach, as they walk by numerous topless young women, Matthew and Victor are embarrassed to find that their daughters are topless as well.

That night, after dropping the girls off at a beach wedding, the men visit a bar. While Victor flirts with a woman named Isabella, Matthew returns to the wedding, where he encounters Jennifer. When the wedding attendees remove their clothes and take a dip in the ocean, Jennifer persuades Matthew to join them as she takes off her top. While in the water, Jennifer kisses Matthew, which Nikki witnesses, and the two proceed to have sex on the beach. The next morning, Matthew insists that it can never happen again, but Jennifer continues to flirt with him in various inappropriate situations. At one point, while Victor and Nikki are having breakfast in the garden, Jennifer kisses Matthew while he is shaving, transferring some shaving cream to her cheek. At another point, she touches his leg from under the table while having dinner, and the two eventually have sex again. When Jennifer asks Nikki if she hates her, Nikki responds that she hates Matthew instead.

Jennifer tearfully admits to Victor that she had an affair with an older married man, whom she refuses to identify. Victor becomes furious and sets out to hunt down the mystery man, enlisting Matthew's help. While Matthew tries to talk Jennifer into ending their affair, she is determined never to give him up. She takes a nude photo of herself and gives it to Matthew in public while riding the Sugarloaf Cable Car. Matthew ultimately discloses to his friend that Jennifer had the affair with him. Victor is not as upset as Matthew expected because Victor is revealed to have been having an affair with Karen, who arrives at the urging of Nikki.

Jennifer is hospitalized after attempting suicide with an overdose of birth control pills, but survives. Back at the house, Karen and Nikki both refuse to speak to Matthew, forcing him to share a room with Victor, but the men fight over each other's sexual misconduct. The next morning, Jennifer returns from the hospital with Lorenzo, a young male nurse she met while recuperating. Victor allows Jennifer to stay at the house for another week with Nikki and Lorenzo after the parents leave. Karen ends her affair with Victor and invites Matthew to join her in Bahia to work on their marital problems. One year later, Victor finalizes his divorce but ends up remarrying his wife.

After a series of romantic entanglements are revealed, Jennifer survives a suicide attempt and returns from the hospital accompanied by Lorenzo, a young nurse. The parents leave Rio, allowing the younger characters to remain, while Karen invites Matthew to join her in Bahia to work on their marriage.

The ending wraps up the multiple threads of infidelity and emotional upheaval with a blend of resolution and lingering consequences. Jennifer’s survival and new companionship signal a shift towards moving on, while the parents' departure and attempts at reconciliation underscore the film’s farcical approach to complex adult relationships. Ultimately, the film leaves its characters trying to rebuild or reimagine their connections, in line with its comedic, boundary-pushing tone.