Mark answers the call to save an alien species, but the mission has unexpected personal consequences.

An old enemy threatens everything Mark holds dear.

The Grayson household is upended when Mark returns to Earth with surprising new responsibilities. The Guardians of the Globe face dangers both at home and away.

As Mark attempts to salvage his personal life, a new villain arrives, presenting Invincible with his greatest challenge yet. Donald grapples with his past.

Mark starts his college career, Debbie struggles with personal trauma, and Allen the Alien returns home to find a new threat facing the Coalition of Planets.

In the aftermath of his father's betrayal, Mark struggles with his responsibilities as Invincible and encounters an unexpected enemy.

After two challenging missions, the Guardians of the Globe struggle to work as a team. Meanwhile, Mark tries to balance his hero duties, personal relationships, and his future as a college student.

It's summer break for Mark and his friends, but supervillains don't take a vacation. Mark is forced to face the consequences of Omni-Man's double life.