'The Line in the Sand':
As the Justice League grows stronger Lex Luthor lies awake at night, unable to sleep. His dreams become nightmares. In an unexpected twist of fate his indomitable "Legion of Doom" had been thwarted by an upstart group of four metahumans: Jordan Cross, Bart Allen, Kyle Tippet and Kal-El, a Kryptonian.
The defeat was a major blow to the morale of his operatives who had considered themselves invincible until then. Lex decided to make drastic changes to his elite task force. He reorganized it into two units: one whose main purpose was to identify and eliminate threats to Luthorcorp known as Project Vanguard, and one unit whose main purpose was to defend his interests, known as Project Rearguard. He chose Tina Greer to be the commander of the Vanguard in addition to her role as head of his elite task force. He chose Mxyzptlk, Tina's second in command, to be the commander of the Rearguard.
But how do you catch a man who can run faster than the speed of light? How do you fight a man who can control you with the slightest touch? How do you kill a man who knows how you will die? And then there's Kal-El, not a man at all but a Kryptonian, destined to outlive them all.