The Seven Souls

This book takes place in the kingdom of Kospolgina, a kingdom that's only magical when it needs to be, and one of those situations is now. King Fabricio has been infected by a mysterious substance known as the black tar that turns victims into monsters before killing them, and it's up to Prince Felipe to find the Seven Souls, a group of sorcerers who have been continuously reincarnated for over 1,000 years. As it happens, they're all teenagers living in the same town: Bruce, the snobby know-it-all from a more humble background; Wally, the twelve-year-old who is ever the optimist; Marigold, the new kid with a tough exterior; Gabe, Wally's brainiac stepbrother who doesn't care about grades anymore; Amber, the rich, popular girl whom everyone wants to be; Julius, Amber's level headed best friend/boyfriend; and Jeanelle, the teacher's pet with a secret hobby. It's going to be up to the seven of them to save Kospolgina, but there's one twist: the only way to stop the black tar from spreading is to kill the king...