Mark Grayson is a normal teenager except for the fact that his father is the most powerful superhero on the planet. Shortly after his seventeenth birthday, Mark begins to develop powers of his own and enters into his father’s tutelage.
In the aftermath of his father's betrayal, Mark struggles with his responsibilities as Invincible and encounters an unexpected enemy.
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.
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.
Mark answers the call to save an alien species, but the mission has unexpected personal consequences.