Back-story:
In the year 2012, the Gordanian aliens invaded Earth just as they had planned. The World entered a new age. Despite what was sure to be Armageddon, the invasion had a positive affect on the United States of America. At long last, the government and the people became one and began working together. The denying of information ended, with the focus on controlling the invasion, America lost interest with the conflicts in the Middle East, and slowly but surely the entire world shifted their concern to the aliens. Once Americans learned to work together with their leaders, the secret technology that had been undercover for so many years was finally revealed to the public and used to wage war on the aliens. Humans were exposed to the secret technology the government scientist had been working on for so long, and willing participants gained powers. Other technologies allowed those who were involved in mortal accidents to be rebuilt using robotics and becoming that of Cyborgs. The government also revealed the occult practices that had been documented in the X files, and thus, the Temple of Azarath exposed itself to the dimension of Earth. It seemed as though we were entering both a new era as a planet and as a species that was exposed to these "super powers".
But the hard won peace that had followed our triumph over the aliens would soon come to a crashing halt. Following the creation of the Neo Syndicate, a peace treaty was reached with the help of the planet Tamaran. The Gordanians were granted the permission to traverse Earth space as they please as long as they were not to impede Earth's process. Following this peace treaty, the Gordanians focused their attention to Tamaran and the slavery of Earth was long forgotten. Without a common enemy to unite them, Earth slowly fell back into a pit of deception and crime, however, the world was much more dangerous now with the general public exposed to all of these powers, technology, and dark magic. Individuals learned to abuse these powers to fuel their own greed, and things given slang names such as "Super villains" emerged. To counter this, the government began setting up private militias of those willing to accept super powers to thwart the crime wave. One of the youngest and most famous of all of these groups were known as "The Teen Titans", a group of four adolescents supervised by a young adult. Each member of this group signified a certain trait of the new world. A young man willing to give up his childhood to protect his country, a Tamaranean alien, a boy mutated with the advanced technology of gene splicing using animal DNA, a girl born in the alternate dimension of Azarath and given occult powers, and their guardian who was an eighteen year old male nearly killed in an accident but survived by having his vital organs replaced with robotic parts.
Following the destruction of the Brotherhood of Evil and their secret weapon that they had hidden beneath Jump City (a being which could take the form of any substance it came in contact with) the Teen Titans slowly but surely found that there was no longer any need for them. For the next year they would help solve petty crime cases and in rare instances, help track down serial killers, but for the most part, the need of their super powers had long since passed, the infamous super villains had been destroyed. As such, the Teen Titans slowly disestablished and each went their own way, and slowly but surely, the government returned to its shadow. Garfield Logan (better known as "Beast Boy") had been extremely influenced during his time with the Titans, most notably being his relationship with the short-lived sixth titan, Terra. Having only seen her one last time, Beast Boy was still convinced that she was alive and well. Because of both his strong will to preserve justice and his intense search for information on Terra's whereabouts, Beast Boy completed college and went to work for the CIA. Years past and he finally reached the position of an acting field agent.
During a vacation from his hectic career, Beast Boy flies out to Las Vegas to attempt to gamble his worries away. He is currently thirty-four; twenty years have passed since his stint with the Titans. He has reached a very negative period in his life and longs for the excitement and satisfaction he had in his teenage years. But more than anything, he longs for his love, Terra. Once in Las Vegas, Beast Boy comes upon a casino that is hosting a colloquium of agents from the Department of Defense. As fate would have it, Beast Boy runs into, none other than Victor Stone (Cyborg) inside of the casino. Cyborg is now a physicist working for the Department of Defense. He came to Las Vegas after word reached him about the seminar being hosted here. Having not received an invitation, Cyborg was very suspicious as to just what was going on and decided to investigate. Both Cyborg and Beast Boy take this as an opportunity to catch up with each other, during which they find themselves at a bar in the casino and notice a journalist speaking with a security guard outside of a private lounge. The journalist then notices Beast Boy and Cyborg sitting at the bar, he then walks over and reveals himself to be Robin. Robin then explains that he is not in fact a journalist but working undercover as an FBI agent, attempting to debunk the Defense seminar. The three of them conclude that something is amiss in Los Vegas and elect to reestablish the old team to figure out just what is going on. Thus is established, Three of a kind.