出身标准富有阶级家庭的墨西哥青年胡里奥（Gael García Bernal 饰）与德诺（Diego Luna 饰）是一对儿死党，他们各自精力旺盛的女友结伴出国旅行，丢下两人为消磨漫长的无聊暑假犯愁。在德诺家举办的一次总统也亲临现场的宴会上，两人结识了德诺表哥的西班牙妻子露莎，并向她兜售通往传说中号称“天堂之门”的海滩之旅。一别多日，露莎惊闻丈夫出轨伤心欲绝，遂致电德诺要求参加海滩之旅。三人马上出发，于路露莎同两位大男孩无话不谈，并先后与德诺、胡里奥发生了关系，这让德诺与胡里奥的友情产生了裂痕，他们发现女友曾经同对方偷情后愤怒不已，但还是一同到达了天堂之门。这个夏天过后，一些关于青春的记忆永远留在了那片海滩上…… 　　本片获2002年洛杉矶电影节最佳外语片等几十项褒奖。In Mexico City, late teen friends Tenoch Iturbide and Julio Zapata are feeling restless as their respective girlfriends are traveling together through Europe before they all begin the next phase of their lives at college. At a lavish family wedding, Tenoch and Julio meet Luisa Cortés, the twenty-something wife of Tenoch's cousin Jano, the two who have just moved to Mexico from Spain. Tenoch and Julio try to impress the beautiful Luisa by telling her that they will be taking a trip to the most beautiful secluded beach in Mexico called la Boca del Cielo (translated to Heaven's Mouth), the trip and the beach which in reality don't exist. When Luisa learns of Jano's latest marital indiscretion straight from the horse's mouth, she takes Tenoch and Julio's offer to go along on this road trip, meaning that Tenoch and Julio have to pull together quickly a road trip to a non-existent beach. They decide to head toward one suggested by their friend Saba, who seems a little confused himself of this beach's location. On the road trip, which ends up not being totally harmonious, the three go on a trip of discovery. For Luisa, she has to figure out what to do with her immediate future based on the news from Jano and a secret she is keeping. And Tenoch and Julio have to figure out what their friendship really means as they grow up.