When Damon and Katherine first met, they were instant friends. Now, two years later, Katherine's grandmother is set to lose her beloved home unless the terms of a will are met–that Katherine be married by Leap Year's Day! Taking advantage of the superstition, she proposes to her best friend.

Stunned, Damon surprises Katherine in return–by agreeing to her proposition! But a simple marriage of convenience turns into something far more complicated.