During the opening of a museum, Superman tries to stop two robbers. He fails when he falls victim to the poisoning effects of Kryptonite, one of the exhibited rocks. Lex Luthor sees the surveillance tape of the event and determines that this must be Superman's one and only weakness. Luthor orchestrates a scheme to trap Superman, place him in vicinity of the rock, and put an end to him once and for all.
Guest Cast

Victor Brandt
voices Professor Hamilton
Lisa Edelstein
voices Mercy Graves
Brad Garrett
voices Bibbo
Tress MacNeille
voices Tour Guide
Yuji Okumoto
voices Security Guard
John Rubinstein
voices Peterson
Thomas F. Wilson
voices Joey
Scott Valentine
voices Sam
John Garry
voices HanesCast Appearances

Tim Daly
voices Superman / Clark Kent
Dana Delany
voices Lois Lane
Clancy Brown
voices Lex LuthorEpisode Discussion
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