A soldier named Joe Allen finds himself on a two-day leave in New York City during World War II. Upon arrival at Penn Station, Joe accidentally knocks over a young woman named Alice Mayberry. Apologizing for his clumsiness, Joe strikes up a conversation with Alice, who is initially wary but soon warms to his sincerity. As they explore the city together, they visit iconic landmarks and share light-hearted moments, quickly forming a bond. Joe's sincere demeanor and Alice’s warmth create a genuine connection as they talk about their lives and hopes for the future. Each moment they spend together becomes more meaningful, leading Joe to ask Alice to have lunch with him the next day.

Feeling an undeniable connection, Joe and Alice agree to meet again and continue to explore their undeniable chemistry. They navigate the bustling streets of New York City, growing closer with every step. However, the ticking clock of Joe's limited leave looms over their newfound relationship. Along the way, they encounter various New Yorkers who contribute to their unexpected journey, showcasing both the optimism and struggles of everyday life. As Joe and Alice's time together dwindles, they are faced with the emotional reality of parting ways despite their deepening attachment. Their whirlwind adventure through Manhattan sets the stage for further developments, painting a poignant picture of love found against the backdrop of fleeting time and looming uncertainty.