The villainous Abra Kadabra casts a spell on Flash!
Police forensics scientist, Barry Allen, and his wife, Picture News reporter, Iris West, attend a performance of "A Connecticut Yankee In King Arthur's Court". Afterwards, West rekindles her friendship with Margot Tyler, one of the performers in the play. Allen is introduced to John Cardine, the actor who played Merlin. Allen hears a loud voice, which reveals his secret identity as the Flash. As no one else reacts to the revelation, Allen realizes that he, alone, heard the words, as if by magic. Allen immediately suspects Cardine. West and Tyler head out to get caught up on one another's lives. Allen, as the Flash, invisibly follows Cardine to Ceramics Castle. Upon entry, the Flash loses Cardine, but discovers a gang of thieves robbing Ceramics Castle. The Flash quickly takes down the entire gang, and escorts them to the nearest police precinct.
Outside the station house, the owner of Ceramics Castle hands the Flash a curious medallion as a reward. The Flash momentarily glances at the medallion, then turns to hand it back. The Ceramics Castle owner, however, has vanished. Once inside the police precinct, the Flash is at a loss as to why he brought the group of thieves in. Apologizing for his mistake, the Flash departs. Unbeknownst to the Flash, his actions are under observation by three mysterious strangers. En route home, the Flash fails to notice a mugging, an armored car robbery, a mob war, and a jewelry store robbery. The three mysterious strangers are deeply troubled by the Flash's lack of action. Unbeknownst to all parties, the Flash is also being watched by the owner of Ceramics Castle. The owner's features blur into those of Cardine, before finally revealing that he is really Abra Kadabra.
The 64th Century native had been stewing in a prison cell. His only companion, an escape-proof robot, that monitored his every action. Abra Kadabra was able to trick the robot into providing the necessary material to build a "Psychonizer". The device suppresses those areas of the brain that allows it's victims to see, hear, or speak of evil. Using the "Psychonizer" to incapacitate the robot, Abra Kadabra escaped from prison and traveled back in time, to the 20th Century. As Cardine, Abra Kadabra revealed his knowledge of the Flash's secret identity, ensuring that the Flash would follow him to Ceramics Castle. As the owner of Ceramics Castle, Abra Kadabra placed the "Psychonizer" in the Flash's hand, removing the Flash's ability to see, hear or speak of evil.
Upon returning home, the Flash, as Allen, is stunned to see the Golden Age Flash, Doctor Fate, and Doctor Mid-Nite waiting for him, in his living room. Allen is informed about all the crimes he walked right past, without lifting a finger to stop. In his Tower, Doctor Fate became aware of a sinister force, originating in the future, that settled in Central City. Rendezvousing with the Golden Age Flash and Doctor Mid-Nite, the three Justice Society of America members traveled to Earth-1 to warn the Flash. Doctor Fate is unable to remove Abra Kadabra's "spell" from Allen. Doctor Fate reveals Abra Kadabra's next criminal enterprise. The Flash teams up with the Justice Society of America members to bring down Abra Kadabra. Though the Flash cannot perceive the criminals robbing the museum, the Justice Society of America, acting invisibly, aid him in the take down.
Doctor Mid-Nite detonates one of his patented blackout bombs, plunging the room into darkness. The Golden Age Flash steers his counterpart into the criminals. Doctor Fate animates the statues into combatants. With the Justice Society of Amercia's presence invisible to the naked eye, Abra Kadabra erroneously believes that the"Psychonizer" has, somehow, given the Flash an array of new powers. Abra Kadabra immobilizes the Flash by conjuring clutching hands, up from the wooden floor. Doctor Fate commandeers the hands, and has them swing the Flash at, and into, Abra Kadabra. Abra Kadabra levitates the Flash, and sets him to spinning like a top. Doctor Fate is unable to counter Abra Kadabra's magic, as it is actually super-science. Doctor Mid-Nite uses a device, called a "Cryotuber", to cushion the Flash's impact with the far wall.
Doctor Fate divides the Flash into multiple Flashs, surrounding Abra Kadabra. In desperartion, Abra Kadabra removes the effects of the "Psychonizer" on the Flash, in the hopes of erasing all of his new powers. Able to finally see Abra Kadabra, the Flash bombards him with the bodies of the fallen thieves. Abra Kadabra causes the Flash's uniform to constrict about him. The Flash vibrates out of his uniform, and beats Abra Kadabra unconscious. The Flash uses his Cosmic Treadmill to return Abra Kadabra to the 64th century. The Justice Society of America return to Earth-2. West, finally returning home from her night out with Tyler, spies Allen returning home late as well. Allen says he ran into some old friends, too, who were only in town for a short time. When West asks to meet them some day, Allen says she will. Provided, of course, that he can work up the courage to tell his wife that he is the Flash.