Sir Prize and Miss Terious are revealed to be Star Boy and Dream Girl and both are asked to join the Legion.
The Hag is revealed to be Mysa Nal, Dream Girl's sister and the White Witch.
A scientist working for Prince Evillo secretly hated him and instead
of harming the Legionnaires he secretly regrew Lightning Lad's arm,
made Matter-Eater Lad thin again, and restored Bouncing Boy's powers.
Superboy and Supergirl were able to rejoin the Legion when Color Kid
turned the green kryptonite cloud circling the earth into blue
kryptonite.
"The Forgotten Legion" is reprinted in Superboy #205 and Legion of Super-Heroes Archives Vol. 6.