When Hiccup and Toothless discover an ice cave that is home to hundreds of new wild dragons and the mysterious Dragon Rider, the two friends find themselves at the center of a battle to protect the peace.

In a parallel universe, young Lyra Belacqua journeys to the far North to save her best friend and other kidnapped children from terrible experiments by a mysterious organization.

A ten-year-old scientist secretly leaves his family's ranch in Montana where he lives with his cowboy father and scientist mother, scapes home, and travels across the country aboard a freight train to receive an award at the Smithsonian Institute.

Jack Ryan, as a young covert CIA analyst, uncovers a Russian plot to crash the U.S. economy with a terrorist attack.