Su Qinghuan, the orphan of the Xin family, infiltrates the Nan household disguised as an unattractive village girl to uncover her family’s wrongful case. She enters a contract marriage with Nan Sicheng, CEO of the Nan Group. Her multiple identities are revealed one after another; the plain village girl turns out to be SU, a legendary racer. She uncovers the truth behind the Xin family’s bankruptcy a decade ago. From disdain to deep love, Nan Sicheng joins her to hunt the mastermind. They stand by each other and guard their true love.