In 1985, Robbie Hart works as a wedding singer in
Ridgefield, New Jersey, and is preparing to marry his fiancée, Linda. At the reception hall where he performs, he befriends Julia Sullivan, a new waitress. Robbie agrees to sing at Julia's wedding, though her fiancé, businessman and bond investor Glenn Gulia, has not yet set a date. On Robbie's wedding day, his older sister Kate tells him, just before the ceremony, that Linda has decided not to marry him. The abandonment humiliates Robbie and leaves him emotionally devastated. Linda later explains that she was attracted to his earlier ambition of becoming a rock star, and she does not want to be married to a wedding singer. Robbie becomes severely
depressed, worrying those around him. His best friend Sammy persuades him to return to work, but Robbie performs poorly and alienates wedding guests. He decides to stop taking wedding bookings and withdraws his promise to sing for Julia after Glenn finally chooses a wedding date. Julia asks Robbie to help with wedding planning anyway, and their friendship deepens. Julia's cousin Holly develops an interest in Robbie and asks Julia for permission to date him. During a double date with Julia and Glenn, Robbie learns that Glenn cheats repeatedly and intends to continue doing so after marriage. As Robbie and Julia grow closer, they become conflicted about their feelings. After Holly suggests that Julia is choosing Glenn for financial security, Robbie tries to improve his prospects by seeking a bank job, but he fails to secure one. Julia is disappointed by Robbie's sudden focus on money, and they argue after he accuses her of being motivated by the same concerns. Discouraged, Robbie attempts to adopt Sammy's pattern of casual relationships, but Sammy admits he is unhappy and urges Robbie to be honest with Julia. Meanwhile, Julia confides in her mother that she no longer loves Glenn and has developed feelings for Robbie. Robbie arrives intending to declare his feelings and sees Julia through her bedroom window wearing her wedding dress. Not knowing that Julia is privately imagining a marriage to Robbie, he assumes she is thinking about Glenn and leaves. Robbie drinks heavily and encounters Glenn at his
bachelor party, where Glenn is openly involved with another woman. The two argue, Glenn punches Robbie, and he mocks him. Robbie returns home and finds Linda waiting to reconcile, but he passes out. The next morning, Linda answers Robbie's door and introduces herself as his fiancée to a shocked Julia. Julia runs to Glenn and insists they marry immediately. Glenn proposes eloping to Las Vegas. Robbie wakes, rejects Linda’s attempt to return, and forces her to leave, recognizing how superficial their relationship has been. At the 50th wedding anniversary party of Robbie's neighbor Rosie, whom he has been giving singing lessons, Robbie realizes he wants a long-term life with Julia. Rosie encourages him to act, and Holly soon reports that Julia plans to elope with Glenn. Robbie rushes to the airport and boards a flight to
Las Vegas. On the plane, Robbie tells his story to sympathetic passengers, including
Billy Idol, and learns that Julia and Glenn are on the same flight. With help from the crew and Idol, Robbie sings a song he wrote, "Grow Old with You", over the intercom for Julia. When Glenn tries to attack him, others restrain Glenn and confine him in an airplane lavatory. Robbie and Julia confess their love and kiss. Idol offers to recommend Robbie to record executives, and Robbie and Julia later marry, with a band led by Robbie’s friend David performing at their wedding. ==Cast==