Originally published as a serial in The Captain in 1909, Mike Jackson goes to America to play for an MCC side, with his friend Psmith accompanying him 'in a private capacity'. While Mike goes off to Philadelphia to play cricket, Psmith stays in New York and becomes the hero of this novel.

There is no heroine. In a New York restaurant Psmith meets the acting editor of the weekly Cosy Moments, and, through him and the office boy, the cat-loving leader of the Groom Street Gang, Bat Jarvis. As the real editor is away and out of contact, and the proprietor in Europe, Windsor (the acting editor) and Psmith (amateur sub-editor) decide to jazz up the paper and, amongst other campaigns, to attack the unknown landlord of some dreadful New

York slum tenements. The anonymous landlord threatens reprisals to Windsor, Psmith and the paper. With the help of Bat Jarvis and his gang they fight die gangs that the landlord hires to beat them up. There is some shooting and Psmith has to get a new hat as a result.

Psmith, with the help of a legacy from an uncle, and his father in Switzerland, buys Cosy Moments from its proprietor. The owner of the slum property turns out to be a politician running for City Alderman. He is made to repent and to make great improvements in the houses for his tenants.

Psmith calls back the old stagnant staff and hands the paper back to them, while remaining owner (apparently) after he and Mike go back to Cambridge.

Source: Richard Usborne. Plum Sauce. A P G Wodehouse Companion.