Fourteen-year-old Finn was born a healthy rez boy, but after the disappearance of his father years ago, he contracted a harmful virus that damaged his heart and left him in need of a transplant. His time is running out.
Prince Juno is from Elvelon, a mystical realm that hid its magical source, the Heart of Elvelon, on Earth among the Navete Indians centuries ago to shield it from the evils of Elvelon, deep in the region of Polithia. Juno has come to the Earthly Realm to warn the Navete Indians that Tempest, an evil time enchantress, and Nox, her mentor, is after the Heart.
Finn and Juno's worlds collide when Tempest comes to Earth to steal the Heart and use its powers to search for her missing brother. When her plans go awry, she resorts to kidnapping, stealing, and whatever it takes to find him. Finn and Juno must travel to Elvelon to save their friends and find the Heart before it falls into the hands of Nox, ruler of Polithia. Can both hearts be restored before it's too late?