After banished general Slade is found on earth, Clark realizes the Phantom Zone portal must be open and decides to go close it, however dangerous as his super powers don't work there. Oliver was denied coming along but managed by surprise. The heroes find the zone under the rule of general Zod, who looks forward to his revenge for both worlds on Clark and was promised full dominion by Darkseid if he eliminates the great Kryponian adversary. So Clark is forced to enter Zod's arena's mortal gladiator combat, while Oliver is offered an alternative and reminded of being Omega-branded already, which no earthling knows yet. In the Watch Tower, Lois discovers the three hours portal destruction 'safeguard' Clark ordered Tess to trigger and fights it. Written by
Did You Know?
The person Oliver mentions at the end of the episode when referring to Carter's research is named Orion which is one of the New Gods and main opponents of Darkseid in DC Comics continuity. See more
Listen, about this zone, Clark - you know, when you said Jor-El built a prison, I kind of pictured something more confined than a national park.
He built this place so Krypton's worst criminals could have some kind of life.
Sounds like a real sweetheart.
References Superman II