Having escaped to the Unknown Regions, Lina and the others seek help from the village people of Sparks.

Wishing he could play with family members who are busy with homework and other chores, little Ty taps the power of his imagination to make a train out of a big cardboard box, build a chair-and-blanket fort, and enjoy other fun-filled activities.

"The people suffer under the centuries-long rule of the Moon Throne. The royal family--the despotic emperor and his monstrous sons, the Three Terrors--hold the countryside in their choking grip. They bleed the land and oppress the citizens with the frightful powers they inherited from the god locked under their palace. But that god cannot be contained forever. With the aid of Jun, a guard broken by his guilt-stricken past, and Keema, an outcast fighting...

"Princess Lana can't seem to speak up in class at the Royal Mermaid Rescue Crew School, even when she knows the answer. It's much easier to chat with her new friend, a horned creature named Spike. With Lana's help, Spike discovers he's a narwhal, and together they swim north to find his long-lost family. The chilly Northern Seas are full of new adventures--but also an emergency! Can Lana finally find her voice and save the day, or will she freeze...