The English industrialist Lawrence Vinning has recently divorced his first wife, and marries Mary. For their honeymoon they head to his country estate. There he encounters his previous wife Yvonne, who tells him her lawyers think they may still be married as he filed for divorce in America, not Britain. She demands £3,000 to secure a divorce, so he is isn't guilty of bigamy. He does his best to keep Yvonne away from Mary, therefore postponing his wedding night with his second wife.
When Lawrence's lawyer Frank Betterton turns up the next morning, he tries in vain to get Yvonne to give up her claim. When Mary enters and discovers them, Lawrence manages to convince her that Yvonne and Frank are husband and wife. While she soon sees through this, she plays along and over the following day the pretend couple develop genuine feelings for each other. News then arrives that the divorce is valid, freeing the way for the two couples to consummate their relationships.
