A gruesome serial killer is terrorizing London while brilliant but disgraced detective John Luther sits behind bars. Haunted by his failure to capture the cyber psychopath who now taunts him, Luther decides to break out of prison to finish the job by any means necessary.
Determined to ensure Superman's ultimate sacrifice was not in vain, Bruce Wayne aligns forces with Diana Prince with plans to recruit a team of metahumans to protect the world from an approaching threat of catastrophic proportions.