When the Talon organization detonated the time anchor in Venice and the spire of Notre Dame de Paris was sucked into the purple crack, the world was shocked to realize that Overwatch's secret force, Shadowwatch, was standing on the precipice of doomsday. This elite team, composed of former soldier 76, Death Reyes, hacker Sombra and genetic scientist Moira, has guarded mankind in the shadows for twenty years, but became a globally wanted criminal due to the failure of Operation Venice. Now Black Talon has restarted the "Zero Hour Project" and is trying to resurrect the Omnic Titan through the cracks in time. Shadowwatch must uncover the traitors hidden within the organization and prevent the collapse of the torrent of time amid the United Nations' pursuit and Black Talon's siege. But they don't know that the real threat does not come from the past or the future, but that Commander Reyes, who was distorted by Moira's genetic experiment, is gradually turning into a singularity that swallows time and space.
