By day, Sonya, Kei, and Lou are the glamorous idol group "The Pussycats," but by night, they are the lethal assassins known as the Midnight Panther. Specializing in eliminating scumbags and monsters, the trio is tasked by their handler, Old Lady, to take down their biggest target yet: the tyrannical King Bad Eroheem Gibal II of the Blue Dragon Kingdom.
Lou, an assassin with a chemically altered body, is tasked with eliminating the tyrannical King Bad. Disguised as a dancer, Lou infiltrates the castle and lures the King into a fatal trap. Revealing her true identity as his long-lost sister Lukish, Lou uses her poison-immune skin to deliver a lethal dose of Purple Dragon venom through physical contact. After King Bad suffers a slow death for his past crimes, Lou moves on to her next mission, though the King's ghost continues to haunt her.