Jack might be the only kid in the world who's dreading summer. But he's got a good reason: summer is when his single mom takes a second job and leaves him at home to watch his autistic kid sister, Maddy. It's a lot of responsibility, and it's boring, too, because Maddy doesn't talk. Ever. But then, one day at the flea market, Maddy does talk to tell Jack to trade their mom's car for a box of mysterious seeds.

Duke from SIGMA 6 takes on Destro from COBRA when he discovers COBRA's undersea mining rig that is causing ocean quakes.

In this conclusion to the series, Oona, Jax and An Tzu must find the green beacon on a dangerous planet as the final battle looms while fighting off the evil Stan Moon in order to save the 5 Worlds.

Oona Lee arrives on Salassandra determined to light the yellow beacon and continue her quest to save the Five Worlds from the evil Mimic's influence.

On the aethership's maiden voyage, Seraphin and the Knights of Aether had prepared for everything--except treason. The villainous chamberlain wants to overthrow King Ludwig and claim the electro-aetheric technology for Prussia. The only escape for the king and his companions lies in the frosty skies above Bavaria. The ship's first flight is a success, but their respite is short-lived. As long as the chamberlain is free to spread his lies, these travelers...

"The end of summer is here. Jo, Mal, Molly, April, Ripley, and the scouts of Miss Qiunzella Thiskwin Penniquiqul Thistle Crumpet's Camp for Hardcore Lady Types are running out of time to fight back against the mysterious force known as the Grey! And even if they succeed, they will have to deal with their biggest challenge yet--saying goodbye as summer finally comes to an end"--Provided by publisher.

Since his father's death, Ever Barnes has secretly been in charge of an amazing mechanical building but now, ruffians are after him and his new friend Hannah, the building owner's spunky daughter.

While Mal and Molly go on a date that takes a bizarre turn when the Bear Woman appears, Jo, April, and Riley set out to earn as many mundane badges as they can.

After pulling a badly injured Captain Drake from the water, Nessa must decide whether or not she can trust him in the fight against Greyfalcon and if it is true that he has seen Jared.