Barry visits Joe in witness protection.
Barry tells the rest of Team Flash about the Mirrorverse.
Godspeed shows up at STAR Labs and runs away before Nash can use a pulse cannon on him.
Godspeed extracted speed from a speedster through vibrational sonics. They want to turn to Hartley for help.
Cisco found out that Hartley hates the Flash because he greatly injured Hartley's right-hand man, Roderick Smith, in self-defense. He is being held in Mercury Labs.
Barry and Nash visit Hartley and tells him that they can help Roderick.
Iris finds Kamilla at STAR Labs in the Mirrorverse.
Hartley figures out that Barry is the Flash and Cisco is Vibe.
They enlist Allegra's help to save Roderick, but it doesn't work. Godspeed returns and tells Barry that he has one hour to give him his velocity.
Barry realizes that Roderick is Hartley's boyfriend.
Godspeed goes to Iron Heights and takes the speed from every other Godspeed that Team Flash has caught.
Barry and Godspeed face off. Barry's speed gives out, but Hartley saves him. He helps Barry throw a lightning bolt at him that knocks him out.
Godspeed's blood is made of charged sound, which they use to save Roderick.
The Godspeed they caught was not a real person, just like the other Godspeeds. Someone sent him.
Cisco thinks they can build a perpetual motion machine to get back those stuck in the Mirrorverse, but they're missing something that can be found in Atlantis.
Eva wakes up from inside a chamber.