they have dreams ddd。 one day, the dream of flying into the vast sky. know how far this sky covered by glass is. the distant future. humans have built mobile fortress urban "plantation" on the abandoned land and praised civilization. the driver's living facility built there, "mistine", is commonly known as "bird cage". the kids live there. know nothing about the outside world. know nothing about the free sky. the mission they were told was only combat. the enemy is a huge living being called the dragon whose everything is covered by mystery. to fight against an enemy that has not been seen before, the children ride on it and are called " FRANXX” robot. they firmly believe that riding in it is a proof of their existence. there is a boy who was once called a child prodigy. codename 016. the name is guang. but he is now falling to the bottom. it is an existence that is not needed by others. if not multiplied FRANXX， just as if it does not exist. in front of such a wide range, one day, a mysterious girl called 02 appeared. on her forehead, there were two gorgeous horns. “—i found it, mine DARLING”