Hollow City by Ransom Riggs

The Second Novel of Miss Peregrine's Peculiar Children

In this sequel, a group of peculiar children, led by Jacob Portman, embarks on a perilous journey to save their beloved headmistress, Miss Peregrine, who is trapped in bird form. As they travel through war-torn London, they encounter new allies and face dangerous enemies, including wights and hollowgasts. The children must navigate a world filled with time loops and peculiar creatures, relying on their unique abilities to survive. Along the way, Jacob discovers more about his own powers and the true extent of his connection to the peculiar world, leading to unexpected revelations and setting the stage for further adventures.