She goes to the wrong place at a banquet and saves a CEO whose leg has cramped up and who is about to drown. Isn’t he supposed to repay her by offering himself to her?
But this scheming CEO retaliates because she saw him in such an embarrassing state, exploiting her labor instead.
In the end, he even wants to squeeze every last bit of value out of her. She has to marry the CEO, or he’ll tell her parents she seduced him and abandoned him. Since when did this guy even win over her parents back in her hometown?!