The series follows teenager Mark Grayson, a human-alien hybrid, who becomes a crime-fighting superhero known as "Invincible" under the guidance of his father, Nolan / Omni-Man, the most powerful superhero on the planet. As he adjusts to his new powers, Mark struggles to balance his personal life with his superhero duties and is forced to prove that he can live up to his father, unaware of a conspiracy that threatens the world and leading him to question the true nature of his role. Steven Yeun stars in the series as Mark, alongside J. K. Simmons and Sandra Oh as Mark's father and mother, Nolan and Debbie Grayson, respectively, while the remaining cast members have recurring roles.
