検索キーワード： 制作 "HarperAudio" アクション・アドベンチャー

Regan Fitz and Elliot Mason have been enemies since they started training to become Glitchers - people who travel through time to preserve important historical events. But everything changes when they find a letter from Regan’s future self, warning them about an impending disaster that threatens them and everyone they know.

The boxmates from the B.E.S.T. Academy are lost at sea and their best friend, Grayson Bix, is missing. Their hoverpod is busted, their stomachs are empty, and their hopes are crushed. When a mysterious vessel approaches, Ace, Leo, and Jayla are certain they'll be carted back to the Tower of Power, with their punishments for escaping awaiting. But a twist: The crew is rescued and introduced to a vibrant and thriving underwater world that is off the grid and out of Bixonics's eye...and one step closer to finding Grayson.

Super spies reporting for duty! When Maddie Robinson and her team are assigned a new super secret mission to protect the world’s most famous pop star from a mysterious foe, she knows she’ll need every tool available. That’s when she discovers a secret buried deep within the Illuminati’s archives: a device that can predict the future, invented by renowned Renaissance man Leonardo da Vinci himself!

Eleven-year-old Ace Wells’s dream has finally come true: he is a new cadet in the B.E.S.T. (Biological Enhancement Systems Technology) Program. Until now, he’s been living in the shadow of his superstar brother, Finn—but not for long. This is new Ace! He knows he can make his mark on the world with SuperSoar wings, but on day one, nothing goes as planned. The antagonistic elevator AI Otis wants to eat his belongings, the physical feats set by his tough-nut coach are impossible, and his celebrity roommates are far from welcoming.

Phineas T. Fogg and Lola Ray may have just saved the universe without really trying, but it’s going to take a lot of work to get Lola back home to the 21st century. Their only hope is to find Dimension Why. Good thing Lola’s father left her a map embossed on a Twinkie. But before Phin and Lola can begin their search, a mysterious girl, wearing a bathrobe and riding a dragon, absconds with the special snack cake! And, oh right, the mystery girl wants to destroy the universe!

Lucas Adebayo grew up on a small mining ship in the asteroid belt but wants to join the Navy and become the best pilot in the galaxy. The Navy has never accepted a Belter cadet before, but Lucas’ skills secure him a place on the training ship, the Orpheus. Life in the Navy couldn’t be more different than life in the Belt, and Lucas struggles to find his place. As a Belter, he’s an outsider among his peers; as a Navy cadet, he doesn’t quite fit in at home anymore, either.

Maddie Robinson has always been overlooked: by her parents (who disappeared), by her friends (who are nonexistent), and even science fair judges (who think she has “so much...potential”). So when a mysterious man called The Recruiter invites her to join a secret society of spies, Maddie is floored. Then she discovers that these super secret super spies are the Illuminati - the world’s most covert organization rumored to control, well, everything. And one more thing: The Illuminati are kids, like Maddie!

Explorers Troop 301 has explored a lot of planets hoping to find a place to call home. But their latest mission feels like the most boring ever - until they get chased by giant ANTibodies straight into the planet’s open mouth! Uh-oh! This planet is really a ginormous, planet-sized alien, and the explorers are her lunch! Can Finn and his friends make it through all 35 stomachs, battle an army of ants, out-whiz a super-computer in a deadly game of trivia, and find a way out? Or are they doomed to be part of the planet’s balanced diet?

Thirteen-year-old Corey Fletcher is the world’s first Throwback. He has the power to not only to travel back in time, but to change the past. It’s a power that comes with no small amount of responsibility - but when Corey tried fix some of history’s worst evils, he discovers that the consequences for his good deeds have changed him in ways that he never expected and ways he may not be able to fix. Trapped in a body that’s not his own, his powers all but gone, Corey realizes his latest mission may be the hardest of all - to save himself.

Finn’s best robot bud, Foggy, comes down with a weird virus while exploring a planet full of dancing robots. But he won’t let Finn help him. Foggy only wants to dance the Hokey Pokey with his new robot friends! Now Finn and Explorers Troop 301 have to find a cure before the robots attack. But can Finn also fix his friendship with Foggy? Or will his robot BFF stay on the two-stepping planet forever?

In the year 2085, Benny Love is pretty used to surviving on what he and his family can scavenge on Earth. But when he wins a scholarship for a life-changing trip to visit the Lunar Taj, the first-ever resort on the moon, Benny thinks he finally has a chance to give his family a better life. Benny can't wait to fly his very own Space Runner, practice reverse bungee jumping, and explore craters on the dark side of the moon.

One hundred and fifty years ago, the first dinosaurs were cloned. Soon after, they replaced humans at the top of the food chain. The only way to survive was to move into underground compounds.... Five years ago, Sky Mundy's father vanished from North Compound without a trace. Now she has just stumbled on a clue that not only suggests his disappearance is just the tip of an even larger mystery but also points directly to the surface. To find her dad - and possibly even save the world - Sky and her best friend, Shawn, must break out of their underground home and venture topside.

Noah, his sister Megan, and their best friends, Richie and Ella, live next door to the zoo. Megan is the first to notice the puzzling behavior of some of the animals. One day Megan disappears, and her brother and their friends realize it’s up to them to find her. Their only choice is to follow a series of clues and sneak into the zoo. But once inside, will they discover there’s much more to the Clarksville City Zoo than they could ever have guessed?

In New York Times best-selling author Dan Gutman's all-new series, which blends fascinating real history with an action-packed and hilarious adventure, four very different kids are picked by a mysterious billionaire to travel through time and photograph some of history's most important events. This time the four friends are headed to 1863 to catch Abraham Lincoln delivering his famous Gettysburg Address.

In this explosive third installment of New York Times bestselling author Dan Gutman’s action-packed series, four thrill-seeking friends travel back in time to document one of the most devastating natural disasters the world has ever seen.

Using his father's watch as a key, Jake intends to return to Calypsos. Instead he's thrust into a strange desert land where he's joined by his friends Marika, Pindor, and Bach'uuk and his sister, Kady. As they try to figure out what to do next, a surprise attack by the beautiful young Princess Nefertiti takes them all captive. Soon even she is battling the Skull King's minions. For Jake has something the Skull King wants - a prize that will give its owner awesome power, including control of the fearsome Howling Sphinx.

Lopside is a Barkonaut - a specially trained dog who assists human astronauts on missions in space. He and the crew aboard the spaceship Laika are en route to set up an outpost on a distant planet. When the mission takes a disastrous turn, the Barkonauts on board suddenly find themselves completely alone on their severely damaged ship. Survival seems impossible. But these dogs are Barkonauts - and Barkonauts always complete their mission.

A 31st-century boy and a 21st-century girl team up to save the universe, evade an evil race of bog mutants, and make a quick pit stop to visit the moon in Dimension Why. John Cusick’s middle-grade debut will transport you to a vast fantasy world full of absurd humor that will keep you gasping all the way to the twist ending.

Finn Caspian, his three best friends, and his robot Foggy are excited to explore a brand-new planet...until Finn’s mom makes them bring along an annoying new robot named Voltronix Zu. Putting up with Voltronix’s bragging is bad enough, but when he accidentally turns the planet inside out, the Explorers get attacked by angry rock giants! Can the four friends find a way to save the planet - and the bubble aliens who live there - before Voltronix causes a volcanic disaster?

Eight-year-old Finn lives is the first kid born in space and he spends his days looking for a new planet to call him with his three best friends and his robot, Foggy. He’s used to wild, galaxy hopping adventures. But when Explorer Troop 301 gets stuck on a planet that’s about to explode, Finn and his friends will have to face giant aliens, a leader with mind control powers, and one evil, fluffy bunny rabbit in order to save the planet...and themselves.