Two sailors on shore leave head out for four days of partying – only to become involved in the affairs of an aspiring singer and her precocious nephew.

Evie's co-workers at the uniform shirt factory, and her almost-fiancée's inability to kiss, inspire her to slip a letter into a size sixteen-and-a-half shirt for some anonymous soldier. It's received by "Wolf" Larson, who immediately throws it away, but his sensitive, dreaming--and short--buddy John McPherson snags it, and begins a correspondence with Evie, pretending to be Wolf. But things get complicated when Evie wants to meet her tall, handsome soldier. And even more complicated when Wolf sees Evie and likes what he sees.

A group of travelers from the United States race through seven European countries in 18 days.