Itâ€™s been a long day for Groot and heâ€™s ready for bed. But just as his eyes start to close, Rocket bursts in - Groot canâ€™t go to sleep yet! Thereâ€™s a whole galaxy that needs to be defended and they must work with all their Super Hero friends to save the day. But is the mission real, or just the beginning of a cosmic dream? Find out in this galactic tale.