Four years ago, Dick, Donna, Hank & Dawn formed the Titans with Garth aka Aqualad. But the team is tested with the arrival of a new villain.

Titans Tower comes under attack by Mercy Graves.

After unearthing an empty grave, the Titans confirm that an old friend is alive - and behind the city’s latest emerging threat. Then, when a Titan falls for Red Hood’s trap, the team races against the clock to save one of their own.

After Nightwing and Red Hood’s battle, Rachel and Gar try to save their friend. Meanwhile, Jason questions his allegiance. With Barbara behind bars, Donna leads her own resistance operation, and Conner helps Blackfire recover her ship.

With Rachel left powerless, Dick turns to an old friend whose magic could be the key to identifying their mysterious enemy. Meanwhile, Conner and Tim investigate attack victims, and Sebastian finds himself at the center of an eerie plot.

An unexpected reunion sheds light on Project Starfire, forcing Kory to make a difficult decision that puts her powers to the ultimate test.