Looking through the Teen Titans Casebook, Guardian and Bumblebee review the heretofore untold origin of the Titans.
When their adult counterparts suddenly turn to crime, Robin, Aqualad, Kid Flash, Speedy, and Wonder Girl — whom the others meet for the first time — converge on Metropolis to seek the aid of Superman, but then decide to team up and battle the Justice-League-members-turned-evil by themselves.
The original Titans trio of Robin, Kid Flash, and Aqualad defeats a rampaging Wonder Woman, while Speedy and Wonder Girl stop the Flash. Then Aquaman, Batman and Green Arrow are also captured by the young heroes.
In JLA headquarters, they discover an alien energy-being, the Antithesis, who has warped the super-heroes in order to feed on the energies released by their criminal actions, but who fades away into nothingness when the last of his Justice League pawns is beaten.
Inspired by the success of their teamwork, the five young heroes form a permanent organization, the Teen Titans, with Speedy as a part-time-only member. Even as Guardian and Bumblebee come to the close of the team’s first case, the other Titans arrive to announce the break-up of the group, in order that the members might again pursue their solo careers.