Shortly after the team assembled, Wonder Woman assisted in helping a newly resurrected Superman regain his memories. With the team now fully assembled, Wonder Woman contributed to the successful offensive against Steppenwolf, forcing the alien invasion into retreat. Afterwards, she began to plan for the Justice League's future alongside Bruce Wayne.
Following the popularity of the Wonder Woman TV series (initially set during World War II), the comic book was also transposed to this era. The change was made possible by the multiverse concept, which maintained that the 1970s Wonder Woman and the original 1940s version existed in two separate yet parallel worlds. A few months after the TV series changed its setting to the 1970s, the comic book returned to the contemporary timeline. Soon after, when the series was written by Jack C. Harris, Steve (Howard) Trevor was killed off yet again.
Wonder Woman and the other heroes were finally released from the Firestorm Matrix when Batman used the Lasso of Truth on Firestorm. Superman was still infected with the Kryptonite shard inside his nervous system, but Lex Luthor was able to extract it, saving Superman's life. Luthor also assembled a group of villains that defeated the Crime Syndicate. Later, at the Batcave, Wonder Woman and the Justice League talked about the enemy that destroyed the Crime Syndicate's world and came to the conclusion that Darkseid would return.