While taking some time off from the Guardians of the Galaxy, the fearsome warrior and swordswoman Gamora must set off on a DANGEROUS mission. She will need to recover a mysterious cube that once belonged to her father, the universally feared Titan Thanos...but not if her evil sister, Nebula, has anything to say about it. With help from some old friends like Rocket–and some surprising new ones–Gamora discovers what it truly means to be part of a family. This cosmic warrior experiences an adventure of EPIC proportions and ultimately battles her most challenging foes yet in Gamora's Galactic Showdown!