Starlight Library Edition

"Forty years ago, Duke McQueen was a space hero who rescued an alien world from tyranny, but nobody believed him when he came back home and told everyone about his adventure. Now his kids have grown up, his wife has passed away, and life has little to offer him in his lonely retirement--until an old-fashioned rocket-ship descends into his backyard and a little boy from the world he saved urges him to come back to save the universe one last time"--