Supergirl: The New 52 Omnibus #2

Plot

From the nightmarish return of Krypton to the machinations of Cyborg-Superman, Kara is thrust from one battle to another until a fight with Lobo sends her over the edge...an edge filled with rage. Will the flame be pulled from her heart or consume her forever? And what is this deep-space school called the Crucible all about?

Collects: Action Comics (2011) #23.1, Action Comics Annual (2013) #2, Batman/ Superman (2013) #16-20, Green Lantern (2011) #28, Red Lanterns (2011) #28-34, Red Lanterns Annual (2014) #1, Superboy (2011) #25, Supergirl (2011) #21-40, Supergirl: Futures End (2014) #1, Superman (2011) #25, and a story from Secret Origins (2014) #1!