Laura, Daniel and Mo disappeared without trace a year ago. They have long been presumed dead.

Which they were.

But now they are not.

And it is up to the resurrected teenagers to discover what happened to them.

Revived by Mr Anabin – the man they knew as their high school music teacher – they are offered a chance to return to the mortal realm if they can solve solve the mystery of their deaths, learn how to use the magic they now possess, and identify the mysterious fourth soul that crossed back over with them.

But their return has upset a delicate balance that has held – just – for millennia.