Showgirl Lorelei and best friend Dorothy embark upon a boat trip to Paris, where Lorelei intends to marry millionaire Gus Esmond. En route, the girls are bedevilled by private detective Malone, hired by Esmond's father to make certain that Lorelei isn't just another gold-digger. When Dorothy falls in love with the poverty-stricken Malone, Lorelei decides to find her pal a wealthier potential husband.