Fan Casting Pair of Kings: The King's Return

(MY FAN-MADE MOVIE. ALL THE CHARACTERS I ADD EXCEPT FOR THE MAIN CAST ARE MY FAN MADE CHARACTERS) Four years after Brady leaves the island of Kinkow, Boomer and Mikayla have been have mysterious dreams night after night. All of them end with four shadowy people landing like superheros and a shadow figure turning their back ,in front of the shadow people, towards Boomer and Mikayla. Ever since then, strange things have been happening around the kingdom that seem to be related to the dream. How will Boomer and Mikayla deal with the things coming their way, and are they ready for the biggest surprise of their lives?