"You were forced upon me, you are a liability. I do not love you, I will never love you Arianna."

What happens when on the day of your sister's wedding she decides to leave the groom at the altar and you're asked to marry your brother-in-law to be?

Join eighteen year old Arianna for a ride she'd never expected to go on. Join twenty-three year old Zach for a marriage he had never prepared himself for. Can these two put aside everything that went on in their past? Can Arianna forget her first true love? Can Zach ever see Arianna as anything but a replacement?