When his grandfather dies under mysterious circumstances, sixteen-year-old Jacob wants to know more about his grandfather's hazy past. On a trip to the Welsh Cairnholm Island he discovers the crumbling Miss Peregrine's Home for Peculiar Children. As Jacob explores the abandoned mansion, he wonders if the children who once lived here, including his grandfather, were more than just peculiar. They may have been dangerous. They may have been quarantined on a desolate island for good reason. And somehow, impossible though it seems, they may still be alive. Jacob travels back in time and sees firsthand the horrors that shaped his grandfather.