Season three of SUPERMAN & LOIS opens weeks after Superman's defeat of Ally Allston. Clark and Lois are now working at the Smallville Gazette together and enjoying small town life. But the Kents' romantic bliss only shines a light on how isolating "the secret" can be. Lois' own work-life balance is put to the test when an undercover assignment reveals a deadly foe that threatens her family.

Fearing the actions of Superman are being left unchecked, Batman takes him on, while the world wrestles with what kind of a hero it really needs. With Batman and Superman fighting each other, a new threat, Doomsday, is created by Lex Luthor. It's up to Superman and Batman to set aside their differences, along with Wonder Woman, to stop Lex Luthor and Doomsday from destroying Metropolis.

Fueled by his restored faith in humanity and inspired by Superman's selfless act, Bruce Wayne enlists newfound ally Diana Prince to face an even greater threat. Together, Batman and Wonder Woman work quickly to recruit a team to stand against this newly awakened enemy. Despite the formation of an unprecedented league of heroes, Batman, Wonder Woman, Aquaman, Cyborg and the Flash, it may be too late to save the planet from an assault of catastrophic...

The world's most famous superhero and comic books' most famous journalist face the pressures and complexities that come with balancing work, justice, and parenthood in today's society.