Batman / Flash: The Button #[nn]

In "The Button Part 1," Saturn Girl’s eerie prediction at Arkham Asylum sets a chilling tone as Batman grapples with the mysterious smiley face button left behind by Wally West’s sudden appearance from the Speed Force. As Batman investigates the artifact in the Batcave, he’s haunted by a vision of his father in the Flashpoint timeline—only to be interrupted by Professor Zoom’s brutal assault. With the button stolen and Zoom’s sudden collapse, the mystery deepens, leaving Batman to confront the unsettling truth that even the most calculated plans can unravel in an instant.

In "The Button Part Two," Barry Allen digs into the mysterious death of Professor Zoom, uncovering a chilling link to the same radiation found on the smiley face button that appeared in the Batcave when Wally West returned from beyond time. With Batman injured and the timeline unraveling, the two heroes race through time using the Cosmic Treadmill to follow the trail of the unknown force behind the signal.

In "The Button Part 3," Batman and the Flash traverse the Flashpoint universe via the Cosmic Treadmill, where Bruce Wayne encounters Thomas Wayne—the Batman of that reality—only to be thrust into a sudden assault by Amazons and Atlanteans. As the two Batmen fight back, Barry works to repair the treadmill, but Thomas makes a final choice to stay behind, ensuring their escape into the timestream—where they soon face the dying Professor Zoom, still holding the Button.

In "The Button Part Four," Barry Allen and Bruce Wayne confront the aftermath of their journey through the time stream, witnessing the mysterious death of Professor Zoom at the hands of a god-like entity. A voice from the past calls out—Jay Garrick, lost in time like the original Wally West—pulling Barry into a desperate, fleeting attempt to save him before being torn away by an unseen force. As the two heroes grapple with what they’ve seen, a strange blue hand moves in the shadows, retrieving the button that fell from Zoom’s corpse.