Hyron and Torku: Blackmoons

This story is about two kids named Hyron and Torku, They are at a beach house when their sister Emily comes and visits. Hyron, Torku and Lily are sitting at the beach when they see a note come ashore. They read the note and it tells them that Hyron and Torku have been chosen for something. In the morning everyone is gone but them. They read a note on their kitchen counter that tells them to go somewhere to get their family back. They figure out the agency is trying to take their power and they have a battle trying to defeat them. Tune in to this exciting story!