Six months after the Flash and his friends stop the Singularity, Central City holds a rally in the speedster's honor. However, Barry doesn't want to go given the sacrifice that was made by the true hero. Meanwhile, a new metahuman, Atom Smasher, sets out to kill the Flash.
The team's visitor, Jay Garrick, explains that he comes from a parallel world and was a speedster there, but lost his powers transitioning over. Now he insists that Barry needs his help fighting a new metahuman, Sand Demon, who came from Jay's world. Meanwhile, Officer Patty Spivot tries to join Joe's Metahuman Taskforce.
Lisa Snart, aka Golden Glider, comes to the team for help when her brother Captain Cold is kidnapped. However, the Flash soon discovers that the villain is working for his father Lewis, who has some mysterious hold over him. Meanwhile, Caitlin and Jay work together to build a speed cannon so that Jay can return to Earth-2, and Joe tells Iris the truth about her mother.
Martin begins to destabilize without Ronnie to merge with him, and the team desperately seek out another metahuman with similar abilities. They find two men: Henry Hewitt and Jefferson "Jax" Jackson. Meanwhile, Iris does some digging into Francine's past, and Barry is hesitate to become involved with Patty after what happened between him and Iris.
Barry battles another breacher, Doctor Light... and discovers that she's Linda's evil counterpart. Meanwhile, the team deals with a new Harrison Wells in their midst, and Barry asks Patty out on a date.
After Dr. Light escapes from her pipeline cell, Barry asks Linda to help them lure Zoom to their world. Meanwhile, the team questions Harrison's motives and Cisco tries to use his powers on the Earth-2 visitor.
While Harrison tells the team that he's heading back to Earth 2 now that they've failed to stop Zoom, Grodd launches a new series of attacks in an attempt to gain the chemicals that he needs to augment his intelligence. Meanwhile, Barry deals with his loss of self-confidence after Zoom cripples him, and Iris calls in a familiar face to help.
Barry and Cisco take Kendra to Oliver and his team, looking for protection when a mysterious immortal comes seeking Kendra. However, a figure from her past arrives to tell her the truth. Meanwhile, Jay refuses to help Harrison test his new speed-enhancement serum, Velocity-6.
Weather Wizard frees Captain Cold and Trickster from prison to help him get revenge on the Flash, but Cold has second thoughts. Meanwhile, iris tells Joe about the son he never knew he had, and Patty confronts the man who killed her father.
The Flash goes up against a meta-human who can slow down time. Meanwhile, Iris advises Barry to tell Patty the truth about his superhero identity, Wally and Joe's relationship grows strained, and Harry sets out to stop Zoom... no matter what it takes.
Cisco has a vibe vision of Reverse-Flash killing Tina McGee, and alerts the team. They soon learn that Barry's greatest enemy is back... from a time in his life before he killed Barry's mother and took the body of Earth-1's Harrison Wells. Meanwhile, Patty gives Barry one last chance to admit that he's Flash, Iris says goodbye to a dying Francine, and Caitlin tries to find a cure for Jay's illness by seeking out his Earth-1 counterpart.
While Flash and the team battle a new meta made out of living tar, Zoom forces Harry to continue secretly stealing Barry's Speed Force.
Barry, Cisco, and Harry go to Earth-2 to rescue Harry's daughter, and Barry take the place of his counterpart... who is married to that world's Iris. Meanwhile, Caitlin and Jay try to come up with a solution when a new metahuman demands that Flash face him in battle.
Special Guest Stars: Robbie Amell
as Ronnie Raymond / Deathstorm |
While on Earth-2, the team get some help from an unexpected source as they look for Zoom's lair.
When King Shark escapes from an A.R.G.U.S. holding tank, Lila and Diggle travel to Central City to warn The Flash. King Shark shows up at the West house and attacks Joe, Iris, Wally, and Barry.
Source: The CW
A new speedster, Trajectory, is in Central Town... and looks to frame Flash for her crimes.