- Joshua Williamson (story, script); Tom King (story)
- Jason Fabok
- Jason Fabok
- Brad Anderson
- Deron Bennett
- Batman [Thomas Wayne] (from Flashpoint universe, death); Emperor Aquaman [Arthur Curry] (flashback, from Flashpoint universe); Wonder Woman [Diana] (flashback, from Flashpoint universe); unidentified Amazons (from Flashpoint universe); unidentified Atlanteans (from Flashpoint universe); Cyborg [Victor Stone] (flashback, from Flashpoint universe); Martha Wayne (photograph, from Flashpoint universe); Bruce Wayne (photograph, from Flashpoint universe); The Flash [Barry Allen]; Batman [Bruce Wayne]; Professor Zoom [Reverse-Flash; Eobard Thawne]
- Having used the Cosmic Treadmill to track the energy from the Button, Batman and the Flash arrive in the Flashpoint universe where Bruce meets his father Thomas, the Batman of that universe. Their meeting is interrupted by a combined attack of Amazons and Atlanteans. While Bruce and Thomas fight off the attack, Barry rebuilds the Cosmic Treadmill so they can escape the Flashpoint universe, but Thomas decides to stay behind and sacrifices himself to allow Bruce and Barry to escape into the timestream. There they encounter Professor Zoom before his death, still in possession of the Button.
- Batcave; Cosmic Treadmill; Flashpoint universe; smiley face button
Story continued from The Flash (DC, 2016 series) #21 and concludes in The Flash (DC, 2016 series) #22.
Story credits include special thanks to Geoff Johns.
In the Flashpoint universe, when his wife Martha and his son Bruce were shot before his eyes, Thomas Wayne swore vengeance and became the Batman. This Thomas Wayne previously met and helped Barry Allen in the Flashpoint 2011 DC mini-series.
The Flashpoint universe is wiped from existence as Bruce and Barry leave it.