Teen Titans Go! #7 — The Legion of Super-Titans!

THE FUTURE IS NOW! When the 31st century's greatest heroes invite one of the Titans to join the future's premier super-team, a madcap competition ensues! But eventually, the Titans discover that this Legion isn't the future Justice League, and it's not the future Teen Titans... it's a trap! Now our heroes have to escape and get back home to change the future, so the Titans' legacy wins out!