The Teen Titans are captured, the world is being overrun and every tool and plan the Justice League try is being preempted by their enemy. But slowly they begin to make up grow, and slowly the League turns the table. And then they bust in, Batman finds out how their enemies were able to know all the Justice League secrets: Dick Grayson. They'd recognised Robin is so often sitting in the back of League meetings and joining them on the field and visiting their bases and wired him into their mainframe, using his mind and his detective skills to patch together information that he was even allowed to hear or catch enough glimpses of to fill in the gaps himself.
And when the League finally take the threat down, Dick is left in a coma while his brain recovers from being essentially part of a super computer. And Bruce is left feeling like he failed because his son only knew all those things that got him weaponised and comatose because Bruce let him see and hear them. And by the time Dick wakes up, Bruce has come to the conclusion thay the best way to protect Dick from every one who wants Justice League secrets is to keep the boy at arms length. Which means Dick wakes up to a world where Bruce is keeping him at arms length and not even letting him down into the cave unsupervised and Dick just wants a hug from his dad and for things to go back to normal.