Star-Lord, aka, Peter Quill, is having an amazing time on Planet Knowhere hanging out with the other Guardians of the Galaxy, until his birthday comes along. Peter is suddenly homesick and longs to be with his family . . . or at least other humans. His friends try to cheer him up but nothing is working. That is until he gets a message from Captain Marvel. She is on a mission searching for a Super Skrull who holds the key to a device that could destroy Earth! The Super Skrull is on Knowhere and she asks Peter to help her find the villain and save Earth. But Captain Marvel informs Peter that since the Skrull is a shape-shifter, they cannot trust anyone, including the Guradians. Can Star-Lord save his family on Earth, without losing the family he has created on Knowhere?