Many years ago, demons invaded Sigrid. The main weapons against dark creatures were the four strongest salvator magicians. But one of them betrayed his comrades, and through his fault Sigrid was swallowed up by demons, and the magic of the salvators disappeared into darkness for a long time. Piper is the first of a new generation of magicians chosen to fight evil. Over time, Piper's magical potential increases, and she begins to see the memories of the traitorous salvator. Now the girl has to find out how she is connected to him and why one of the salvators allowed darkness to penetrate Sigrid.