Olife, a young man from the bottom rungs of society, has been engaged to heiress Susan for three years—but it's a sham, meant only to maintain her "loving fiancée" image to boost her company's IPO. When Olife catches Susan cheating with her lover, he is pushed off a balcony and lands right on Eric, a top tycoon just returning from abroad—their lips accidentally meeting in the fall. Eric, a man with severe mysophobia, is surprisingly intrigued and offers Olife a deal: "Be my regular bed partner, name your price." Olife flatly refuses. But soon, his parents' gambling debts and his sister's life being threatened force him to accept—thirty million for one month.
In their penthouse hotel suite, they begin a relationship strictly "physical, no feelings." But during their entanglement, Eric discovers that Olife's parents were the very ones who murdered his own parents years ago—hatred and obsession begin to coil together. At a fundraising gala, Susan forces Olife to drink with a sleazy partner and slaps him publicly. Eric steps in to defend him, declaring in front of everyone: "I'm going to marry him." He demands Susan break off the engagement, pushing this relationship—born of a transaction and tangled with revenge—completely beyond control.
