Minerva Pearlstar and the Dragon's Heart

Magically binding herself to her worst enemy, an angry mage prince. Discovering deadly, ancient spell books. Attacked by kelpies she once trusted. Minerva contends with these and other dangers during her second semester at Asgard School, all while searching for answers about the red stone she found at the bottom of Bear Lake. The heart-shaped gem burns hot, and sometimes beats like an actual heart. At a local shop, Minerva discovers an ancient “build-a-dragon” book. Reading the instructions, she fears she has found a true dragon’s heart, and that the gem may be the key to awakening the beast. She and her friends must hide the heart from a mad queen, who’s bent on destroying the Norse gods, and anyone else who gets in her way. Even if it means triggering the world-ending battle, Ragnarök.