Mobile communication opportunities grow day by day. No one is surprised that with a phone you can, in seconds, reach someone on the other end of the earth. But what if you can call even from a mobile phone—into heaven? Or into hell. One day the main heroine, who has long dreamed of magical abilities since childhood, learns about this possibility—along with her friend Arseny, the grandson of a hereditary sorceress. But even if you can get through to God or the devil, what can you possibly learn from them? What would you ask? And above all, how do you tell them apart when they have the same number?