When George and Harold hypnotize their principal into thinking that he is the superhero Captain Underpants, he leads them to the lair of the nefarious Dr. Diaper, where they must defeat his evil robot henchmen.

Fourteen-year-old Zach learns he has the same special abilities as his father, who was the President's globe-trotting troubleshooter until "the Bads" killed him, and now Zach must decide whether to use his powers in the same way at the risk of his own life.

Now a full-fledged Ranger, Will must rescue his friend Alyss from a rogue knight and uncover vital information needed to ward off a Scotti invasion.

Turned into a human and banished from Olympus, Apollo must restore five ancient oracles to reclaim his godly powers. Apollo (aka Lester Papadopoulos) is now at Camp Jupiter in the San Francisco Bay Area, where the Roman demigods are preparing for a desperate last stand against the evil Triumvirate of Roman emperors. Hazel, Reyna, Frank, Tyson, Ella are among those who will need Apollo's aid to survive the onslaught. It may be time for him to call...

"When the city is hit by a colossal snowstorm, only one superhero can save the day. But who is this mysterious hero, and why does he disappear once his job is done?"--

In the aftermath of a war between gods and men, a hero, a librarian, and a girl must battle the fantastical elements of a mysterious city stripped of its name.

Chasing the Skandian slave-traders who kidnapped Will and Evanlyn, Ranger Halt and warrior student Horace find themselves in the frozen northern islands, where they battle a ruthless black-clad knight as they attempt to rescue their friends.

Having discovered the truth about the town of Wormwood before surviving the dangerous wilderness of the Quag, heroine Vega Jane, who has endured more than anyone before her, is confronted by devastating forces unlike any she has ever encountered.

As Hava sails across the sea toward Monsea with the world's only copies of the formulas for the zilfium weapon, she makes an unexpected discovery about one of the ship's crew, but before she can unravel the mystery, storms drive their ship off course, wrecking them in the ice far north of the Royal Continent.

Infuriated by the declaration that Pluto is no longer a planet, President Penguin and his penguins invade Earth and it is up to Ricky and his robot pal to defeat them--with some help from Ricky's cousin Lucy and her pets.