Gotham (TV Series) - Wikipedia

In the first season, GCPD Detective James Gordon and his partially corrupt partner Harvey Bullock are tasked with solving a number of criminal cases in Gotham City, including the murder of 12-year-old Bruce Wayne's parents. A gang war brews between crime families led by Carmine Falcone, Sal Maroni, and Fish Mooney, with low-level thug Oswald Cobblepot forced into its center.

In the second season, Theo Galavan surfaces in Gotham to kill Bruce Wayne for the Order of St. Dumas; Gordon is framed for murder by Edward Nygma; and at Arkham Asylum, Professor Hugo Strange runs unorthodox experiments in a secret facility called Indian Hill, transforming its inmates into monsters for the mysterious Court of Owls.

In the third season, Gordon becomes a bounty hunter working to track down the Indian Hill monsters. Jervis Tetch threatens the city's safety with a deadly virus; Cobblepot and Nygma struggle for control over Gotham; and Bruce is told by the Court of Owls' leader to seek out Ra's al Ghul to complete his training.

In the fourth season, Bruce begins to fight crime as a masked vigilante tentatively named the "Dark Knight" to prepare for Ra's al Ghul's return; Sofia Falcone arrives in Gotham to reclaim the criminal underworld from Cobblepot, who has established a new law of "licensed crime"; and Jeremiah Valeska is driven insane and forms an alliance with Ra's al Ghul to turn the city into an isolated ruin, forcing Bruce to fulfill his destiny as "Gotham's Dark Knight".

In the fifth and final season, Gordon and his allies attempt to restore order in Gotham. Nyssa al Ghul seeks vengeance for her father's death; Eduardo Dorrance takes control of the city's military presence; and Jeremiah hatches a scheme to torment Bruce and cement their "bond" as hated enemies.

A decade later, Bruce returns to Gotham, which has flourished with Gordon as commissioner of the GCPD, and begins fighting crime as a bat-inspired vigilante, capturing Cobblepot and Nygma after both attempt to kill Gordon. Jeremiah, having feigned brain death during this time, escapes from Arkham to resume his rivalry with Bruce. Gordon decides against retirement and uses a searchlight atop the police department to contact the new vigilante.