Trouble always comes unexpectedly. So Ivan Tsarevich never dreamed that the rejuvenating apples would turn out to be so insidious: whoever tasted them, in addition to youth, would be rewarded with a terrible disease, and instead of a long and happy life, a terrible fate awaited him - to while away his life as a living dead! Neither the most powerful magic on earth, nor the advanced science of aliens can cope with the infection that has rolled like a lump. Only magical water can stop universal destruction. But Martin, the brave comrade of Ivan Tsarevich, had only seven days to rest. Will he have time, will he be able to cope - after all, he himself ended up with one foot in the grave...