Argumento
upergirl and Power Girl take up the Flamebird and Nightwing's identities to free Kandor II from Ultraman and Saturn Queen's oppressive rule.
JSA Classified #2
JLA #122
Superman (Volume 2) #223
Superman/Batman #27
Supergirl (Volume 5) #6
Supergirl (Volume 5) #7
Supergirl (Volume 5) #8
Supergirl (Volume 5) #9