When Marinette and Adrien aren't living their normal lives as high school students, they're secretly saving Paris as the superhero duo Ladybug and Cat Noir! But the sinister Hawk Moth will stop at nothing to take their Miraculouses. Using the power of his akuma, he takes advantage of negative emotions and transforms ordinary citizens into his loyal servants. His latest victim is Nathaniel, one of Marinette and Adrien's classmates who goes on a rampage as the Evillustrator! Meanwhile, Adrien's father starts to suspect that Cat Noir might actually be his own son...