In search of the Cosmic Seed, the Guardians unexpectedly find themselves in Asgard where they must outwit Thor and Angela in order to discover the seed's origins.
When the Guardians discover that the Cosmic Seed is back on Earth, Quill must return to his hometown and team up with an old nemesis to find the Seed before Korath.
The Guardians must battle a Cosmic Seed supercharged Thanos who takes control of the Earth and molds it into his personal planetary weapon of mass destruction.