Jimmy Olsen has just managed to convince Leo Quintum to let him, Jimmy, take his, Quintum's, place - for a day. Mr. Olsen you're multicolored coat is ready and the technological juggernaut it commands is at your beck and call.
Sometimes you just know that there's going to be "an explosion in the laboratory", so to speak.
The lethal combination is Black Kryptonite . . .
. . . and Superman.
The result . . .
Superman doing a Hulk.
And not all of Leo Quintum's resources can stop him.
The big guy we met during the first issue: a Voyager Titan.
Superman arrives Earthside and goes into a mad rampage prompting Olsen to inject himself with one of Quintum's serums.
The serum turns Jimmy into a Doomsday monster.
As you can see here, Jimmy Doomsday scores a hit.
Superman gives as good as he gets but we never see the ending because the evil Man of Steel suddenly weakens.
It turns out that the Black Kryptonite radiation has a detrimental effect: It induces evil but it also eventually saps the strength of the recipient.
Superman recovers, the Black Kryptonite is secured and Jimmy Olsen manages to survive his day as Leo Quintum. Not without cost.
In a comic full of fantastic, unbelievable things an unlimited bank account is the most fantastic concept of them all.
