Invincible is Mark Grayson's tale. He is the son of Omniman, an extraterrestrial superhero. If you have read previous volume's then you know that Ominman was actually sent here to prepare the earth for takeover. When Mark found out he defeated his father and has since become a superhero in his own right, Invincible.
I love Invincible, it just keeps getting better and better. Even though this graphic novel doesn't hold back on violence, I think it's a great young adult pick because Mark is trying to deal with life as a high school and then college student; including trying to attend classes and having first loves. He is trying to figure out if going to college was the right decision for himself and a lot of people feel that way after they first start college. In the middle of this he is trying to keep the earth from being taken over by other mutants, aliens and super villains. The colors and artwork are vibrant and phenomenal as usual and I can't wait to see what's going to happen next.