Having cryogenically frozen himself to preserve his 1% Speed Force energy, Barry Allen awakens when Eva McCulloch is spotted destroying Black Hole's remnants. He tries to convince her to stop and release his wife, Iris West-Allen, from the Mirrorverse, but to no avail, as Eva ends her latest attack by destroying Sam Scudder, her first mirror duplicate, in front of Rosalind Dillon. Cecile Horton interrogates Dillon, learning that she is working with Eva. Using her empath abilities, Cecile gets Di
After mourning Nash and the Wellses, Barry and Cisco Ramon work towards saving Iris, Kamilla Hwang, and CCPD Captain David Singh by opening a portal to the Mirrorverse. Barry discovers the ASF granted him speed-thinking, allowing him to predict outcomes while causing him to become impersonal. Using his new abilities, he exposes Eva as an imposter on live television, forcing her to flee. However, a choice emerges: save Iris or save Kamilla and Singh. When Barry prioritizes saving Iris exclusively
Eva begins replacing people with mirror duplicates. Sue Dearbon and Ralph Dibny return with evidence to exonerate Sue of Eva's crimes, but Ralph has become a blob since the destruction of McCulloch Technologies. Though Eva convinces Barry he cannot win, Wells comes to S.T.A.R. Labs and reminds him that he is the Paragon of Love. As Barry checks on Iris, he revives her. Barry and his team re-activate the ASF and fight the duplicates while Barry revives the original Speed Force before he and Iris
One week after Eva's attack, Central City begins to rebuild as Iris and Allegra work to cover the Mirrorverse incident for the Central City Citizen. The former struggles to face the trauma from her ordeal in the Mirrorverse while Barry grapples with his guilt over not deducing Mirror-Iris was an impostor. Meanwhile, Abra Kadabra returns and lets himself be arrested by A.R.G.U.S. so he can complete an anti-matter bomb that he intends to use on Central City, making Barry suffer in retaliation for
Due to Eva using her Mirror Gun on Caitlin, Frost's metahuman DNA created a new body. Caitlin and Frost argue over whether to re-merge or stay separated, but eventually agree to the latter. Barry is visited by the Speed Force, as his mother Nora Allen, carrying the same energy signature as the monster that attacked Barry and Kadabra, nicknamed "Fuerza." Barry gives the Speed Force his speed gauge to monitor its health before fighting a new enemy, Psych, who is using fear waves to trap everyone i
Cisco and Chester P. Runk create devices to detect Fuerza and Psych. While setting one near Chester's hometown, however, they get trapped in a time loop of the day before Chester's dad, Quincy, died in a car crash. With Quincy's help, Chester and Cisco build a device to detect and protect themselves from the "time god" Deon Owens, a high school quarterback who is attempting to prevent an injury that ruined his football career. Chester convinces him to let go of his past and that the future remai
Despite healing from his battle with Psych, Barry's powers glitch whenever he is around the Speed Force. It tries to help, but its appearance unsettles Barry. Meanwhile, a microchip is stolen from Ivo Laboratories and a driver is killed by someone with ice powers. Kramer believes Frost is the culprit and issues a warrant for her arrest. Despite being asked not to, Frost visits her old bar to find information on the criminal from the new bartender, Mark Blaine. Now calling himself "Chillblaine,"
Barry and "Nora" search for Fuerza in Keystone City and meet Alexa Rivera, but "Nora" believes Alexa is Fuerza and scares her. Barry gains her trust and learns that Alexa has been blacking out whenever she gets angry. At S.T.A.R. Labs, Team Flash confirms she is Fuerza. "Nora" attacks Iris and uses Barry's powers to kill Alexa. Meanwhile, at Frost's trial, Kramer attempts to force her to take the metahuman cure instead of prison time. Distraught, Caitlin has her mother, Carla Tannhauser, test if
"Nora" tells Iris and Barry that they created the other Forces and vows to kill Psych and Deon. Barry wants to travel back in time to remove their connections to the Forces, but Iris and Cisco disagree. Cisco gives Kamilla a camera that can detect the Forces, allowing Team Citizen to track down "Nora." Barry, Cisco, and Chester enhance the tachyon device to extract the Forces' particles before Barry retrieves Wells to create a "time bubble" to protect the timeline. Realizing Barry's intentions,
While "Nora" reasons with Deon, Psych attacks billionaires. Iris learns Psych is Bashir Adil Malik, a former rich kid who was abandoned by his adoptive and biological parents. Kramer returns to the CCPD and asks Joe to bring in Barry to discuss metahuman transfers after getting information that Rainbow Raider went missing. She later reveals she had created bullets containing the metahuman cure with the governor's approval. Cecile advises Joe that Kramer must stop her hunt on her own, leading to
Iris, Alexa, and Bashir fake their deaths and escape using an illusion. Bashir convinces Alexa to go back and fight "Nora," who conjures a storm that knocks out Cecile and sets prisoners at Iron Heights free, though Frost stops Chillblaine. After failing to recruit Deon, Barry confronts "Nora," but she reveals that the other Forces conjured the storm. Deon betrays "Nora," but is forced to retreat. Joe proves to Barry and Iris that they are not bad parents and they reconcile with Alexa, Bashir, a
Cisco accepts a job at A.R.G.U.S. and reveals that he and Kamilla are moving to Star City. Barry and Caitlin hide their feelings about Cisco leaving to avoid dissuading him, but this upsets him. Elsewhere, meta-human Carrie Bates, later nicknamed Rainbow Raider 2.0, tricks a bank teller into giving her money by placing him in a euphoric state. Barry and an overenthusiastic Cisco confront Bates using a device they used to stop the original Rainbow Raider, but Bates destroys it and sways Cisco, wh
After revealing gaps in Kramer's past to Joe, Cecile, under the control of Psycho-Pirate's mask's "psychic spirit," sends Barry's consciousness to a mindscape where he finds the real Cecile's consciousness, which had been trapped since the Force Storm two weeks prior. "Psycho-Cecile" tricks Iris, Chester, Caitlin, and Sue into stealing the mask from the Central City Museum, which she uses to gain enhanced psychic powers. She later uncovers DeVoe's hover-chair in order to amplify and feed off of
As Barry and Iris go on vacation, Allegra's cousin Esperanza Garcia / Ultraviolet resurfaces to kill a Dr. Olsen, who contributed to turning Ultraviolet into an assassin at the cost of her voice, and attack Allegra to dissuade her from looking for her. Believing that there is some good left in her cousin, Allegra and Sue eventually track Ultraviolet and Olsen to a warehouse, where Allegra unlocks her powers' full potential and defeats Ultraviolet. Olsen is sent to jail while Caitlin, Allegra, an
Barry dreams about his future daughter Nora West-Allen, leading him to believe Iris is pregnant, so he develops a way to test Iris' hCG levels. Despite Barry wanting to keep it a secret, Cecile and Chester find out. Meanwhile, Frost reluctantly brings Chillblaine to S.T.A.R. Labs after he gets injured in a fight. Suddenly, six modem-speaking Godspeed clones arrive in Central City to target Barry, so Chester creates a translating algorithm and activates S.T.A.R. Labs' defenses. When the clones br
Barry dreams about Nora again, who says that her future is in danger. John Diggle later helps Barry trap a Godspeed clone, who reveals that they are searching for the "prime" August Heart, and requests Barry's aid in killing him, but escapes after Barry refuses. Barry decides to go to 2049 to check on Nora, but is knocked out of the Speed Force by Godspeed clones. Barry then finds Deon protecting Iris, who is phasing through temporal planes. Diggle, Cecile, and Frost find an amnesiac Heart, but
Barry allows Bart and Nora to stay in the past and join him in fighting off a squad of Godspeed clones. Later, Barry says that Nora should "rewind time and ignore the family rules," but Nora reveals that she is not the "other Nora," but a different Nora. They target Bart, who considers Godspeed "his Thawne", having witnessed Godspeed murdering Jay Garrick, who had always encouraged Bart. Iris eventually returns. After several losses against the clones, Barry and Iris decide to bench Nora and Bar
Godspeed demands "organic speed" in exchange for ending the war. The Speed Force reawakens Bart and grants Iris superspeed; they fight the Godspeed clones alongside Team Flash. However, the Speed Force is forced to retreat when the clones begin to feed off of her energy. Allegra arrives with Chester's device and removes the clones' speed. Barry decides to grant Heart's request, restoring his memories. Against Cecile's urging, Heart merges with the clones. Eobard Thawne arrives and incapacitates