Why Leave Home? is said to be a lost film according to the Fox section at Lost Film Files.

Lash is the head coal stoker on a steam ship whose shipmates have nicknamed "Captain". Lash somehow grabs the attention of society dame passenger Cora Nevins. Nevins is actually a jewel thief who's lifted diamonds from wealthy passenger Arthur Condrax. She needs Lash to aid in sneaking the "ice" ashore at Singapore. Cocky is Lash's concertina-playing buddy and uses it to signal Lash.

Nightclub singer Alice Carroll is found in the office of club owner Al Barrow, who is lying dead on the floor. Alice has been overheard threatening to kill Barrow rather than give in to his advances. She protests her innocence, but the District Attorney doesn't believe her and charges her with Barrow's murder. However, things aren't quite as cut-and-dried as the D.A. believes them to be.

Nora Mason becomes entangled in a family mix-up of murder and scandal that threatens to ruin her career and entire future; Unless the mother she does not know can find a way to save her.

Mildred Harker loses custody of her child in a messy divorce settlement. Leaving her hometown in disgrace, Mildred heads to New York, where after a crash course in the school of hard knocks she joins the chorus of a Ziegfeld-like musical revue. Now a full-fledged gold-digger, she enjoys the favors of backstage johnnies and elderly sugar daddies, but finally finds true love in the form of Park Avenue socialite Ted Willing.

High-stepper Earl Hastings is continually mistaken for his twin brother, Ezra, a meek professor at a girls' seminary, and his constant flirtations in and around the dormitories--most notably with the daughter of the dean--involve Ezra in several compromising situations. Finally, a woman pursuing Earl for breach of promise unscrambles the twins with the help of the dean's daughter.

Soapy Gibson (Edward Ellis) and his wife Annie (Marjorie Rambeau) run a lonely hearts club in a small town. Even during the Depression years these were often "clip joints" - places where people with money but no mate got taken by someone offering the promise of companionship. However, Soapy and Annie are strictly on the level - and they have more than one reason to want to stay on the level. You see Soapy escaped from the law years ago, had some plastic surgery and changed his name, and has been living on the lam with his wife ever since.

Stephen Ghent, a mineowner, falls in love with Ruth Jordan, an arrogant girl from the East, unaware that she is the daughter of his dead partner. Ruth is vacationing in Arizona and Mexico with a fast set of friends, including her fiancé, Edgar. Manuella, a Spanish halfbreed hopelessly in love with Ghent, causes Ruth to return to her fiancé when she insinuates that Ghent belongs to her. Ghent follows Ruth, kidnaps her, and takes her into the wilderness to endure hardship. There she discovers that she loves Ghent, and she discards Edgar in favor of him.

Two Marines are sent to South Sea island where they fight over a local island girl.

Having raised four children alone, widow Mary Williams still manages to love her eldest son, vicious and sadistic Danny Williams, who has led a life of crime and now returns to inflict his insane behavior on the family household.