Having encountered deception and betrayal on his way, Cerberus found himself in a dark, frightening and mystical place from which it is very difficult to get out - purgatory. On his way he meets the most unusual creatures, with different, almost always interesting stories. The situation is complicated by friends who have found themselves in purgatory, who also need to be saved somehow. At the same time, old enemies continue to weave their networks, not even suspecting what is happening to the three-headed demon. Will Cerberus be able to get out of trouble when there is no chance of it? almost none?