With the world still reeling, a dangerous stranger arrives - testing Mark to his limits and beyond.

Earth's greatest heroes join forces to fight an unimaginable threat.

A powerful new figure challenges Mark's idea of what's right and what's wrong. Rae approaches Rex with a big life decision.

Mark and Eve start a business and encounter a familiar face. Debbie worries that Oliver's growing up too quickly.

Two strangers ask Mark for help with a mysterious villain. Elsewhere in the galaxy, Nolan grapples with his identity and Allen finds a surprising new ally.

Mark struggles to teach Oliver what it means to be a superhero. Debbie explores a new relationship and a changed family dynamic.

Mark takes a stand, unaware of the ramifications for his family, the GDA, and even the Guardians. Cecil remembers his past and Eve makes an important decision.

Mark Grayson is back and stronger than ever - with new enemies out for blood and old villains out for revenge.