Three days before tying the knot, George encounters two fascinating individuals: Alicia, a captivating Spanish woman, and Gerard, a Frenchman dealing with the pain of unrequited love after his recent proposal was rejected. In an attempt to lift Gerard's spirits, George invites him to join Alicia's party that very night. At the party, George can't help but be drawn to Alicia, but it turns out she is already in a relationship with a British professor, Nathan.
In a twist of fate, a drunken Gerard climbs to the roof and contemplates ending his life, but George skillfully talks him down with the bittersweet line, > "Jump tomorrow." As a gesture of gratitude for saving his life, Gerard insists on driving George to his wedding. During their road trip, George buys an audiocassette to learn Spanish, all the while daydreaming about Alicia. The film humorously parodies Spanish soap operas through fantasy sequences where George imagines himself and Alicia as the stars.
As they travel, Gerard makes an important realization: George is not truly in love with his fiancée, Sophie, who is more of a childhood obligation than a soulmate. When George spots Alicia and Nathan at a gas station, Gerard encourages him to follow them. They soon find themselves in a peculiar hotel filled with love-themed decor, including a bathtub shaped like a giant champagne glass. Gerard advises George to win Alicia's attention by making her envious. Hesitantly, George ends up inviting a saleswoman named "Heather Leather" to his room, completely unaware that she has an allergy to cologne, resulting in chaos.
Despite his mischief, George never connects with Alicia, who receives a rather unconventional engagement ring from Nathan—one made of bone. The following day, George feels the urge to continue his journey solo, but Gerard delivers a heartfelt talk about the essence of love, urging George to stay by his side.
In a surprising turn of events, Alicia and Nathan hitch a ride with George and Gerard, believing it to be mere coincidence. Conflicts arise between Nathan and Gerard as they debate over the relevance of the French language, while George and Alicia's chemistry continues to blossom. Upon arriving at Alicia's family home, where Nathan is to meet them for the first time, George wrestles with the urge to leave but is persuaded by Gerard to remain, echoing the sentiment to “jump tomorrow” once more.
Nathan ends up bedridden after overindulging in a spicy dish offered by Alicia's deaf-mute uncle, who takes a particular interest in teaching George a Spanish dance. Meanwhile, Gerard finds himself captivated by Alicia's mother, a widow, and they all enjoy a festive celebration that night. Although George has the perfect opportunity to confess his feelings, his shyness holds him back.
Subsequently, Gerard shares a night of companionship with Alicia’s mother, but his hopes are dashed in the morning when she turns him away for moving too fast. As Gerard and George embark on their journey to the wedding, they drop George off before Gerard heads towards Niagara Falls, where he contemplates suicide once more. However, a young boy's advice about solitude and inspiration shifts Gerard's perspective.
During the wedding ceremony, George boldly declares, “I am Jorge” (the Spanish version of George) and ultimately calls off the marriage. He and Sophie acknowledge that their union was more about convenience than romance. Finally, Gerard and George manage to find Alicia and Nathan at the border of Canada, where George finally musters the courage to profess his love for Alicia.
