My Sister Is the Warlord Queen — Episode 3

Abandoned by their parents, Blackwood sisters Catherine and Grace grew up with only each other to rely on. As adults, both built successful lives. But at Grace’s engagement party, Catherine arrives straight from an undercover mission, still dressed as a janitor, and becomes the laughingstock of Grace’s future in-laws and former classmates. When Grace’s fiancé betrays and humiliates her, Catherine reveals her true identity as the Warlord Queen and makes everyone regret underestimating the sisters.