After being miserable for 6 years in the Overland, Gregor finally convinces his mom to let him go back. But once he goes back to his home, his one and only true love, Luxa, and all his real friends, he realizes the Underland still needs the Warrior. Yes, you can TECHNICALLY read this without reading the original Underland Chronicles by Suzanne Collins, but it would make absolutely NO SENSE and I higly recommend reading those because they are AMAZING!!!