A fairy tale

Charlie Reed is a seventeen-year-old boy, a high school student, and an athlete who plays football and baseball, hoping that his skills in both will help him get a college scholarship. He is also a responsible person; he has taken responsibility for himself and for his father, who fell into the depths of addiction after his wife was killed when she was run over by a truck one day. While passing near a large house on the hill, he heard loud barking, not ordinary barking but more like a cry for help. When Charlie entered the house, he saw that the old owner had fallen from the ladder and broken his leg, so he helped him. Over time, the old man trusted him and grew close to him. When he died, he left him everything he owned, but there was something special about this house. In its backyard, there was a shed that emitted strange sounds. When Charlie asked the old man about these sounds, he told him he would tell him at the right time. The time was right after his death; he left him a recorded tape in which he told him a story that no one would believe, and he left him a key. It is a story about a vast abandoned city, but it is alive; its streets are empty, its buildings are haunted, and its people are gray-skinned. In its sky, two moons are always obscured by clouds. Its rabbits are giant, and its cockroaches are the size of cats. It has a sundial; whoever sits on it either regains their youth or ages. It is guarded by a giant named Hana. Where is this city located? Why are its people gray-skinned? Why are its animals and insects large? Why do the moons orbit its sky? And what is the connection of all this to Buditch and Charlie?