The Guardians of the Galaxy have a new reason to worry: they discover a doppelganger of Groot! Soon the squad members realize that someone has cloned their tree-like friend and is selling doubles with all their might, while the original Guardian is constantly weakening. In search of the truth, the team visits the Collector, and he offers a seemingly lucrative deal: his Groot clone in exchange for an assistant who ran away from him with some valuables. Now the Guardians have to go on a search into the very heart of the warlike Kree Empire, collect numerous Groot doubles and save your friend. An already difficult task becomes even more complicated when the squad finds a mysterious thief - a young green-skinned girl named Kya, whose secret could change Gamora's life forever. Will the Guardians of the Galaxy be able to unravel the tangle of conspiracy, betrayal, cruelty and genetic research?