Sam Baldwin, portrayed by Tom Hanks, is a Chicago architect grappling with the profound loss of his wife, Maggie, who succumbed to cancer. His friend Jay Mattews, played by Rob Reiner, encourages him to seek help through a support group or therapy, yet Sam finds it challenging to escape the relentless memories of Maggie that haunt his time in Chicago.
In an effort to start anew, Sam and his young son, Jonah (Ross Malinger), relocate to Seattle, but Sam's grief lingers, making it difficult for him to embrace this fresh chapter in their lives. Fast forward 18 months later, on Christmas Eve of 1992, Jonah, wanting to see his father find happiness again, takes a bold step by calling a talk radio show hosted by Dr. Marcia Fieldstone of Network America. With gentle persuasion from Jonah, Sam hesitantly joins the conversation, where he openly expresses his heartfelt emotions, recalling how Maggie once made Christmas special. He honestly shares, > “Every kid needs a mother,” and reveals his doubts about ever loving again, coining the phrase "Sleepless in Seattle."
This heartfelt confession resonates with countless women across the nation, leading to an outpouring of heartfelt letters addressed to Sam. The following day, Jonah inadvertently shares their address with the radio station. Among the listeners is Annie Reed, a Baltimore Sun reporter portrayed by Meg Ryan. Although she is engaged to Walter (Bill Pullman), she wrestles with an unshakeable feeling that something vital is missing from their relationship. Annie has just introduced Walter to her family—her parents Cliff (Kevin O'Morrison) and Barbara (Le Clanché Du Rand), along with her siblings, Irene (Frances Conroy) and Dennis (David Hyde Pierce). Walter's numerous allergies complicate their wedding plans, as they are unable to have an outdoor ceremony due to his aversion to bees, strawberries, and even grass.
Despite her pragmatic nature, Annie finds it difficult to dismiss the idea of fate, especially considering the quirky circumstances that brought her and Walter together at the deli. When she learns about the remarkable radio call in which Sam shared his pain, Annie's curiosity piques, prompting her editor to encourage her to write a piece on the phenomenon surrounding Sam's story. Meanwhile, Walter has plans for a business trip and invites Annie to join him in New York for a romantic Valentine's dinner.
Yet, Annie cannot shake off thoughts of Sam and finds herself in emotional turmoil whenever she reflects on his interview. Longing for an emotional connection that her relationship with Walter lacks, she impulsively drafts a letter suggesting a meeting with Sam on top of the Empire State Building on Valentine’s Day. Though she initially intends to keep the letter, her well-meaning friend and editor, Becky (Rosie O'Donnell), sends it off for her, while also arranging for Annie to investigate stories about radio shows in Seattle.
As Sam begins to date a colleague named Victoria (Barbara Garrick), Jonah disapproves, especially after reading Annie's letter about the Baltimore Orioles. Anxious to see his father find new love, Jonah decides to respond positively to Annie's invitation for the New York meeting, guided by advice from his friend Jessica (Gaby Hoffmann).
During a visit to the airport to drop off Victoria, Sam unexpectedly encounters Annie as she disembarks from her plane, yet he remains oblivious to her identity. Annie, noticing Sam and Jonah having fun on the beach, mistakenly believes Sam's sister, Suzy (Rita Wilson), to be his girlfriend. A chance encounter ensues as Sam greets Annie, but she retreats, feeling foolish. Driven by her uncertainty, Annie ultimately goes to New York to meet Walter for Valentine's Day.
On the other hand, Jonah, motivated by a desire to connect with Annie, secretly flies to New York without his father's consent, determined to find her at the Empire State Building. Meanwhile, while dining at the Rainbow Room with Walter, Annie confesses her feelings of doubt about their engagement. Agreeing to a mutual end, she races to the Empire State Building only to find the observation deck has closed. Convincing the guard to let her in, she arrives just moments after Sam and Jonah take the elevator down.
In the quiet atmosphere of the observation deck, Annie discovers a backpack left behind by Jonah, pulling out a teddy bear as a wave of destiny washes over her. At that moment, Sam and Jonah arrive, and Jonah expresses curiosity about whether the teddy bear belongs to Annie. As their eyes meet, a connection sparks, giving way to Jonah's delighted realization: "You’re Annie.” With the captivating elevator operator looking on, Sam extends his hand to Annie and with a simple, “Shall we?” the three begin their journey down, setting the stage for a new chapter filled with hope and possibility.
