When Ives Trengrouse hijacks his friend Den's coach after the Trengrouse Ball, he thinks it's no more than a prank. But Den isn't inside. Instead, it's his sister Katie, going home early with a migraine.

Compromised beyond saving, the two must marry immediately-and do so. Katie's dreams of a big London Season are gone. Ives can't go on his light-hearted, care-for-nothing way now he's a married man.

Neither of them wants to be in this marriage: can they turn childhood friendship into something deeper and everlasting?