Superman II to Jor-El and General Zod. He finds Zod at the White House and tells him Superman is the son of Jor-El, their jailer, and offers to lead him to Superman in exchange for control of Australia. The three Kryptonians ally with Luthor and go to the offices of the "Daily Planet". Superman arrives, after having found the green crystal that restores his powers, and battles the three. Zod realizes Superman cares for the humans and takes advantage of this by threatening bystanders. Superman realizes the only way to stop Zod and the others is to lure them to the Fortress.
Superman II contract to finish both pictures. Nevertheless, with months left of filming, the Salkinds had halted filming "Superman II" and focus on finishing "Superman" by which Donner had already completed 75% of the sequel. During the pause in filming, the Salkinds agreed to a negative pickup deal with Warner Bros. granting the studio rights to foreign distribution and television airings in exchange for more financing. Following the release of "Superman" in December 1978, Spengler encountered "Variety" columnist Army Archerd at a Christmas party that, in which he confirmed that while there had been tension between him and Donner, he was proud