Main Story: A fake Sun Boy comes to Smallville asking Superboy's help in assembling a super-weapon. Meanwhile Tom Tanner, an escapee from reform school, takes over Clark Kent's identity.
Co-Feature: The Bizarros celebrate when their world is invaded by animated Blue Kryptonite statues, until the invaders try to make it round again. Then war breaks out. The Blue Kryptonite radiation was unblocked by regular lead suits but blocked by imperfect duplicates of the same lead suits.