When a piece of Groot is replanted, the endless clones cause a galaxy of trouble in this original, action-packed adventure novel. Can an ever-expanding number of beings truthfully make the claim "I am Groot"? When the Guardians discover a double of their arboreal companion, the trail leads straight to their old enemy, the Collector. Someone, they learn, has been growing and selling Groots across the galaxy. The Collector offers to give up his own "Grootling," but in exchange, the Guardians must track down the culprit. Reluctantly taking the deal, the Guardians must now venture into the heart of the militaristic Kree Empire. But as usual, the Collector didn't tell them everything. The thief they're after has green skin and a bad temper—just like the Guardians' own Gamora, the deadliest woman in the galaxy. As the Guardians race to find the missing pieces of their companion before he weakens and dies, they find themselves in the midst of a conspiracy that goes roots-deep. Can they outrun an army of enemies in time to save a tree, a girl, and the galaxy?