you are the last elemental master in existence because the overlord killed off every single elemental Master to make sure his rule would stay he is forever stuck among everyone every single one of the ninjas is dead and you have all the elemental powers you know you're the only one who save Ninjago storyline starts out when you are 5 years old and everyone but the children have helmets to control their every move brainwashing helmets to be exact so everyone follows the overlord's rules