In the 1930s, the world's first generation of superheroes gained superpowers and became a legend of that era.Now, they have entered their twilight years and have become respected veteran guardians.However, their children—the next generations who also possess superpowers—are struggling between expectations and reality in their efforts to pursue the brilliant footprints of their parents.They not only have to face their own challenges and confusion, but also look for their own heroic path in a world that has been changed.