Alex just woke up inside an elegant room wearing an expensive wedding dress while holding a letter in her hand. Her twin sister, Alexa, whom she just met, begged her to pretend to be Alexa and marry Uriel Fontagio, a millionaire, in exchange for treating her sick mother. She had no choice but to agree to Alexa's wishes so she married her twin's fiance. But how can someone like her who is clumsy and not used to luxury get along with her cold husband without being discovered?