The world's greatest heroes and villians are dead due to a single swift attack by a mysterious force. Only the heroes' teenaged kids survived and with nothing but questions. They decide to band together and fight against crime and supervilliany in their city despite their inexperience. A hunt for a killer and trying to become the heroes their parents were turns into madness as friendships are tested and battles are fought. Will they emerge as champions or will they all fall under the pressure?