Which Kind of Witchery?

5 Sorcerers have to travel over the kingdom, searching for a certain gem stone, along the way fighting against royal guards and finding other gems, truths and untold prophecies, ones that include them all. When they find the gem stone it isn't at all what they expected and they have to protect it like their lives and all the people in the kingdom's lives depend on it, because they do. The evil will come.