The film opens with a sweeping view of a rotating holder filled with travel cards depicting various locations, including a striking image of a fountain in a quaint Roman plaza. As the scene transitions to the fountain, viewers are immersed in a lively evening atmosphere where couples toss coins, hoping for lasting love. The scene then gives way to the postcard image of the fountain, known as the Fountain of Love, before seamlessly shifting to the skyline of New York City, where we find a glamorous gala at the Guggenheim Museum.
Beth Martin (Kristen Bell), one of the curators, joins her colleagues at their table while feeling the tension rise as her ex-boyfriend, Brady Sacks (Lee Pace), appears unexpectedly. As Beth engages with him, she inadvertently reveals her awkwardness when a piece of spinach gets caught between her teeth. Brady expresses remorse for his past actions and expresses a desire to reconnect. Just as Beth begins to soften, Brady reveals he is now engaged to someone else, leading to a cascade of misunderstandings among Beth's friends who mistakenly believe she's just agreed to marry him. In a moment of public embarrassment, Beth announces that the rumor isn’t true but whimsically leaves the door open for the future.
After a humiliating night marked by her left heel breaking, Beth returns home, eager to escape reality. However, her sister Joan (Alexis Dziena) barges in, wearing an engagement ring and glowing with excitement about her impending marriage to an Italian man named Umberto. Their conversation highlights Beth's ambivalence towards her own love life compared to Joan's impulsive happiness, setting the stage for Beth's reflective journey on love and commitment.
The following day, at work, a meeting takes an unexpected turn when the museum's president, Celeste (Anjelica Huston), announces the upcoming Board of Trustees' Annual Circle of Gold gala, where Beth’s latest exhibition on pain is to be showcased. Amidst the impending wedding and professional obligations, Beth’s internal conflict grows. As the wedding in Rome approaches, she finds herself torn but determined to fulfill her promises, even while grappling with the unresolved feelings stirred by her own relationships.
Upon arriving in Rome, Beth encounters swirling chaos that further complicates her trip, including delays from her zealous taxi driver who insists on showcasing the romantic city. Joining her family outside the chapel, Beth braces herself for the wedding. An awkward start to the ceremony, particularly marked by the late arrival of Nick Beamon (Josh Duhamel), sets the tone for a comedic disaster, further fueled by Beth's struggles to juggle work concerns amidst family festivities.
As the wedding unfolds, the revelry is punctuated by moments that add to Beth's frustration, including her father's intrusive comments about her relationship status and a shopping fiasco involving a messed-up wedding ritual. Each misstep unfolds to reveal Beth's discomfort and the underlying pressures she feels regarding love and trust. Gradually, the hints and connections between Beth and Nick unfold, showcasing a developing friendship that blossoms during dance contests and misadventures, mapping the way for humorous yet heartfelt moments.
After a series of comedic escapades, missed connections, and confrontations, the narrative propels Beth to confront her feelings decisively. A thrilling mix of unexpected circumstances leads to her realizing the depth of her connection with Nick, which transforms her outlook on love. When the gala arrives, the stakes are at their highest, and Beth's choices weigh heavily on both her career and her personal happiness.
In a climactic moment of self-reflection by the Fountain of Love, Beth grapples with the fates of her past actions. As she and Nick navigate the delicate balance between genuine affection and misconceptions, their connection deepens, illuminated by true feelings that promise a hopeful future. With laughter and love intertwining, the film culminates in a celebration of love's unpredictability and the joy that comes from embracing vulnerability.
Ultimately, the story wraps up in a colorful and lively wedding scene that mirrors the chaos yet warmth of Beth's journey, highlighting the transformation of her understanding of love and commitment, perfectly exemplified by her marrying Nick in a heartfelt conclusion against the whimsical backdrop of the romantic city that started it all.
