--Vol. 1, The Boy Who Crashed to Earth: "When a mysterious boy falls from the sky, friends D.J. and Gina must discover the secrets of his identity and help him save the world"-- Vol. 2, Saving the Whole Wide World: "Everyone’s favorite space boy, Hilo, is just settling into life on earth (Bowling? Knock-knock jokes? OUTSTANDING!) when strange portals begin opening up all over town. And HOLY MACKEREL! Even STRANGER creatures are coming through them!" -- Vol. 3, The Great Big Boom: "Hilo may look like an ordinary kid, but he’s DEFINITELY not! When we last saw Hilo, DJ, and Gina, Gina had been sucked into a mysterious portal! But friends don’t let friends disappear into NOWHERE! It’s up to D.J. and Hilo to follow her. " -- Vol. 4, Waking the Monsters: "Mega Robot Monsters are suddenly waking up all over and they’re TOO BIG and TOO STRONG for Hilo to fight on his own! Luckily, he doesn’t have to! He has GINA and some brand new SUPER POWERS on his side! Being heroes can be super fun-but it can also be SUPER dangerous! And the closer Hilo and Gina get to saving their world from the monsters–the closer Hilo gets to the dark secret of his past. Does he really want to know? Do WE?!" -- Vol. 5, Then Everything Went Wrong: "What REALLY happened in Hilo’s world before he came to Earth? D.J. and our favorite space boy, Hilo, take a DANGEROUS trip to Hilo’s home planet to find out! " --Vol. 6, All the Pieces Fit: For five books, Razorwark has chased Hilo through the universe. Now the chase is over. Hilo's done running. And the time has come for one final showdown. The sacrifice will be great.--Vol. 7: Gina, The Girl Who Broke the World -- Vol. 7: Gina and the Big Secret Provided by publisher.