Hee-seo was on the fast track to success - until her luck took a sudden nosedive. Her shaman grandmother insists it’s because her yin energy is too strong, and the only cure is to find a man with powerful yang energy to balance it out. Hee-seo laughs off the superstitious advice…until the night she meets Gong Tae-su, the charismatic head of the planning team whose energy feels almost dangerously magnetic. One unexpected encounter later, her world starts to spin out of control - along with her heart. Maybe Grandma was right, after all…