is ▁on ▁In finite ▁Earth s , ▁so ▁was ▁the ▁pre - c ris is ▁Earth - 3 . ▁ ▁At ▁the ▁time ▁J LA : ▁Earth ▁ 2 ▁was ▁published , ▁generally ▁only ▁two ▁univers es ▁existed : ▁a ▁primary ▁universe ▁made ▁of ▁ordinary ▁matter ▁where ▁the ▁main stream ▁stories ▁took ▁place , ▁and ▁an ▁ant im atter ▁universe ▁where ▁the ▁Crime ▁Sy nd icate ▁origin ated . ▁Alexander ▁L ut hor ▁in ▁this ▁story ▁was ▁from ▁the ▁ant im atter ▁universe ▁and ▁he ▁designated ▁the ▁primary ▁universe ▁as ▁Earth ▁ 2 ▁upon ▁discover ing ▁it , ▁hence ▁the ▁book ▁title . ▁ ▁DC ▁Comics ▁later ▁rev ived ▁the ▁concept ▁of ▁mult iverse ▁in ▁In finite ▁Cris is ▁and ▁ 5 2 . ▁As ▁a ▁result , ▁the ▁Earth ▁ 2 ▁concept ▁introduced ▁in ▁this ▁book ▁no ▁longer ▁exists ▁and ▁the ▁term ▁Earth ▁ 2 ▁has ▁a ▁different ▁meaning ▁in ▁the ▁current ▁continu ity . ▁ ▁Plot ▁summary ▁Alexander ▁L ut hor , ▁the ▁l one ▁hero ▁from ▁the ▁Ant im atter ▁universe , ▁breaks ▁the ▁bar rier ▁between ▁Earth s ▁ 1 ▁and ▁ 2 , ▁seeking ▁the ▁J LA ' s ▁help . ▁ ▁He ▁impr isons ▁and ▁takes ▁the ▁place ▁of ▁his ▁evil ▁positive - m atter ▁counter part . ▁ ▁Meanwhile , ▁the ▁J LA ▁investigate ▁a ▁plane ▁crash ▁where ▁all ▁the ▁( de ad ) ▁passengers ▁have ▁hearts ▁on ▁the ▁right ▁side ▁of ▁their ▁bodies , ▁and ▁money ▁bearing ▁the ▁s log an ▁" In ▁Mam mon