When thirteen-year-olds Jonah and Chip, who are both adopted, learn they were discovered on a plane that appeared out of nowhere, full of babies with no adults on board, they realize that they have uncovered a mystery involving time travel and two opposing forces, each trying to repair the fabric of time.

George and Harold are forced to contemplate a world without Captain Underpants.

While gathering crafting ingredients in the Nether, Brett and his friends end up in another time period to help a stranger get home.

"Two queens, separated by a thousand years, must face their ultimate destinies--a second chance for salvation, or the destruction their world has been dreading"--

Fourteen-year-old Sam Faulkner journeys through time to ancient China, Renaissance Rome, and into the future to rescue his friend Alicia and prevent the death of this mother.

The dark wizard Maldred has trapped dragon master Eko as well as wizards who have opposed him, all of them frozen in time and space inside a wall in his hideout; so Drake and Worm set out to seek the help of the Time Dragon--but when a imp named Beezel interferes Drake ends up back in his own past, and he must find a way to get back to the present.

While Jake continues searching for his father and is sent by the obsidian mirror to multiple times in the past, Sarah and Venn battle with Summer for control of a powerful coin.

This time, meet famous explorer Leif Erikson and help save a narwhal! When the magic tree house whisks Jack and Annie to Greenland, they're not sure what time they've landed in, but they immediately know what their mission is: save a narwhal! Then, they meet a young hunter named Leif Erikson, and they ask for his help. But Leif has other ideas.

When Corey learns that he has the ability to save lives while time traveling, he is determined to go back in time to save his grandmother who died on September 11, 2001.

Red the Time Dragon transports Joe and Lilly to England, around 1200 A.D., to teach them about life in the Middle Ages.