The Tale of the Three Cats

an old tale in The Hell Hound series

There were three children who weren't different from others but they had nightmares about three cats who were abused and torched by a group of people who were very abusive twords things that couldn't defend themselves,the three cats died,they aren't just seeking revenge but something much greater,but the three kids are very confused, frightened,and lost in there nightmares, will they find out what the three cats are seeking? or will they be the ones seeking something?