Valentina Salazar is the true heiress who was switched at birth. After catching her fiancé cheating in a hotel, she fights back on the spot. She then signs a three-year contract marriage with Sebastián Rivas, agreeing to play the role of a wife with off-the-charts fighting prowess in exchange for a monthly salary of one million. Sebastián Rivas returns to the country to compete for the family fortune, while his stepmother and illegitimate son press him step by step; the fake heiress and her biased parents keep creating obstacles. In the contract marriage, Valentina Salazar helps Ji Xingzhou deal with his stepmother, publicly humiliates the fake heiress, and reclaims the shares. The two go from using each other to falling in love after marriage, and ultimately turn the fake act into reality and achieve a happy ending.
