Hee-seon, the only daughter of SUN Group, travels abroad with Tae-seong, whom she married secretly from the family. Tae-seong, who has been secretly plotting things with Ga-eun, plans to steal Hee-seon’s family shares. However, Tae-seong devises another plan in response to the chairman’s worsening illness, which he heard about during their trip. It now involves dealing with Kang-han, a friend whom Tae-seong planted next to Ga-eun. But everything goes differently than planned.