After Calista tries to find her powers in a more drastic way, she meets RetroGirl whom Christian knows more about than he's letting on. Meanwhile his partner makes her first official Powers arrest. After a while Christian becomes more suspicious about Johnny Royalle's death, and visits Wolf to seek his help.

As a lethal powers-enhancing drug is unleashed on the public, Detectives Walker and Pilgrim seek out the criminal mastermind behind it with the help of iconic Power, Retro Girl. As clues come to light, Walker considers the possibility that Wolfe, his dangerous former mentor turned nemesis, might have the answers he seeks.

Johnny realizes that's his new drug is dangerous, but is it too late to stop Wolf before all hell breaks loose?

In the wake of the battle to stop Wolfe, the Powers division gathers to mourn the loss of their fellow officers, while Walker seeks answers about his own future and the possibility of becoming Diamond once again. After seeing the uncertain and dangerous side effects of Sway first-hand Johnny Royalle begins unsavory experiments on known subjects of the drug.

Wolfe has escaped prison, it is now up to Christian and Co to stop his reign of terror from sucking the life of all the power teens that took Sway.

The world is turned upside down by the seemingly impossible and horrifying murder of retro girl. Pressure is on the powers division to bring the perpetrator to Justice, but when Walker is pulled off the case for being too close to the victim, and may be a suspect himself, he must go off-the-books to avenge the woman he loved.

Commander Cross unofficially reopens the Retro girl case, ordering Pilgrim and Walker to lead a covert investigation that may put them in a life-threatening situation. Meanwhile, Los Angeles goes in lockdown mode as gang warfare reaches a fever pitch, pulling the revered Power, SuperShock out of retirement.

Walker learns that something isn’t quite right with SuperShock, while Pilgrim and Kutter investigate an elusive “Ghost.” Calista’s estranged father unexpectedly comes to town.