Totally in love with each other and seemingly oblivious to the marital strife in evidence wherever they go, Peter Piper and Sidney Taylor, who work in different offices in the Empire State Building and live in the same neighborhood, have been saving for three years to get married. Because Pete's doting mother, who is jealous of his affection for Sidney, has insisted that she cannot live with them if they marry, they have not been able to wed as Pete has not been able to afford to buy an additional home for himself and Sidney. Sidney's mother Elsie, who is dissatisfied as the wife of a mild-mannered, unassuming insurance saleman, whom she calls a "jellyfish," has begun an affair with their boarder, Mal Jarvis. Elsie urges Sidney to drop Pete and marry someone with money and ambition. After Sidney has a bitter argument with Mrs. Piper when she spies lip rouge on her son, they reconcile, and when Pete is promoted to saleman, he and Sidney plan their wedding. During a rehearsal the day before the wedding is to take place, Jarvis tells Elsie that they must leave the country that night because he took some of his bank's money for speculation and federal examiners have arrived to investigate. When Sidney argues with her mother about Jarvis, Elsie hurts her deeply by revealing that she never wanted a child and that she was never in love with her husband Willie. Elsie tries to apologize to Sidney before she leaves. When Willie finds Elsie's goodbye note, he has a heart attack. Sidney and Pete use their marriage fund for Willie's doctors and hospitalization costs and put the wedding off. Six months later, Willie and Mrs. Piper bitterly blame each other for their children's inability to marry. After seeing Pete sitting with a sexy co-worker who has designs on him, Sidney offers to go away with him for a "holiday" to alleviate his sex urge. She is relieved when Pete refuses, but when Mrs. Piper urges her to set Pete free, she decides that the situation is hopeless and tells Pete. After Jarvis' speculation has paid off, Elsie returns and tries to give Willie a bond for Sidney, but he pridefully refuses it. Pete then learns that the $100 investment he made with a widower who has been courting his mother, is now worth $740. He tells Sidney that tomorrow really will be their big day, and they soon honeymoon at Niagara Falls.