Continuation of the adventures of the bat Shade. During a terrible earthquake, the earth in the forest splits, and Griffin, the young son of the silver wing Shade, falls into the resulting crack. As soon as Shade realizes that Griffin has been sucked into the Underworld, he goes to his rescue. Shade knows that there is no time to waste: after all, if a living person remains among the dead for a long time, he himself dies. An already difficult and dangerous journey becomes even more difficult and dangerous when it turns out that Griffin is wanted not only by him, but also by the king of ghost vampires Goth.