Sexy Husband summary: "If you become my daughter and marry Cha Jun-tae, I'll help save your father's company." Ha-yeon, who had to rebuild the company in place of her father, who was unjustly killed in an investment scam, is driven into a desperate situation and decides to accept the conditions set by the investment company's chairman, Ji Kang-do, and enter into a fake marriage with Cha Jun-tae, the head of a rival company. "Wouldn't I be more trustworthy if I saw how determined Ji Ha-yeon is?" But this man... ...is incredibly sexy.