Rise of the dragons

"Sirin, Allie, and Joss have joined forces with the Silver dragon Lysander, the only creature capable of opening portals between the dragon world and the human world. But the powerful Lennix clan is following the children's every move and will stop at nothing to capture Lysander. After generations of plotting, the Lennixes--and their bloodthirsty dragon allies, the Raptors--are terrifyingly close to establishing a brutal dragon regime on Earth, just like they did centuries ago. Now it's up to the new friends to protect Lysander while searching for the lost source of dragon magic, the only force powerful enough to stop the Raptors. But first they must decide what's more important: finding the missing treasure or guarding the most important secret in the world"--Back cover.

"Once our world was full of dragons who lived in harmony with humans. Dragons counseled kings and queens. They fought in human battles. And they gave humans the most precious gift of all: magic. But after a group of rogue dragons, the Raptors, tried to take over Earth, all dragons were banished to another realm. Most humans forgot about the dragons, claiming they never existed. Eleven-year-old Sirin knows the truth--she grew up with stories passed down through the generations. However, when her mother falls ill, even Sirin has trouble believing in magic . . . until she sees a mysterious streak of silver in the night sky. Sirin becomes the first child to lock with a dragon in centuries--forming a deep friendship unlike anything she's ever imagined. But Sirin learns that not all dragons returned with good intentions, and soon she finds herself at the center of a battle between the dragons who want to protect the humans . . . and those who want to destroy them"--Provided by publisher.