Dusk and Dawn are twins. Dawn is arranged to be married to River Mondragon. But on the day of the wedding, Dawn just disappeared. To save her father's dignity and their company, Dusk decided that she'll take her sister's place at the altar. What will happen if her 'husband' found out that he was being deceived by Dusk? Will River forgive her? Or she'll face River's wrath for deceiving him? What will happen if she fall in love with him?