Collects Marvel Universe Guardians of the Galaxy #20-23.
The Spartax War! Thanos has come to the planet Spartax, and trust us, he isn't on vacation! Now the Guardians of the Galaxy must unite with Thor and his all-star guard in order to save Peter Quill! But while Star-Lord's future may be in doubt, can Gamora escape her past? She's attempting to make amends for her past misdeeds, but finds herself ensnared in a deadly trap set by her evil sister, Nebula! And when Ronan and the Grandmaster join the fray, you know there'll be trouble!