Marianette a highschool teenager who is clumsy and is known by her peers for disaster making is chosen by her fairy Kwami as the one to save the world as lady bug.On the other hand,her classmate and crush Adrian is chosen to be her sidekick,cat noir to assist her on the mission.They are not aware of their true identities.Sticken by grieve and desire to bring back his wife,Adrianes father evokes his evil him.