When a cranky tenant (Elizabeth Patterson, in her first appearance as Mrs. Trumble,) threatens to move because of Little Ricky's loud crying, Ethel makes it clear that her friendship with Lucy is more important than a rental agreement. But Ethel doesn't let the Ricardos forget her loyalty.

Convinced everyone has forgotten her birthday, a forlorn Lucy sits on a park bench and meets up with a group of musical "lost souls." To embarrass Ricky, she brings them to the Tropicana, only to discover that a surprise birthday party awaits her.

The Ricardos sell their old washing machine to the Mertzes for $35. When it breaks down the next day, the Mertzes want out of the deal. A tug-of-war ensues, however, when the Mertzes want the machine back after a repairman offers them $50 for it.

Lucy sneaks into the Mertzes' apartment to borrow one of Fred's suits so that she can order him a custom-made tweed suit for his birthday. This leads Ethel to think that Lucy is the notorious neighborhood burglar, "Madame X", and she goes spying on her friend to prove it.

Ricky hires a business manager, and Lucy finds him tighter with money than Ricky.

A Hollywood talent scout is coming over to the apartment to audition Ricky for a movie role. But Ricky won't be the only one looking to attract the scout's attention. (Who's that gal in the Marilyn Monroe getup?).

The Ricardos and Mertzes head for California. But first, of coures, there are complications. The chief one: Lucy's mother, who shows up and wants to accompany them. Ricky objects (to put it mildly), and when Fred and Ethel overhear him complaining about too many people on the trip, they take it personally. And when the dust from that blowup finally settles, there's packing to do.

Ricky returns from Hollywood as a celebrity, and even Lucy gets in on the hero worship. Can Ricky stand her brand of hero worship?

Ricky, Ethel, and Fred are aboard their ship to Europe when Lucy rushes down the gangplank for one last goodbye to Little Ricky, who will be in Lucy's mother's care while she is in Europe. The ship heads out to sea, leaving Lucy frantically trying to catch up with it.

Little Ricky gets drums and the Mertzes get headaches. So do Lucy and Ricky, but they're not about to evict themselves.