The greatest threat to the peace and stability of the galaxy in centuries has ended thanks to the Legion of Super-Heroes. Now, the United Planets must reaffirm control over a devastated population, and the ideal situation is to make the Legion an officially sanctioned peace-keeping force. Still financially and emotionally reeling from the tragic aftermath of the brink of war, will the 31st-century's band of rebellious teens be willing to work for the establishment? The Legion also gains a powerful new ally as legendary 21st-century hero Supergirl makes her debut in a new millennium. With no memory of how she got there and no idea how to get back, the Girl of Tomorrow applies for full-time Legionnaire membership. Collecting THE LEGION OF SUPER-HEROES #14-15 and SUPERGIRL AND THE LEGION OF SUPER-HEROES #16-19