The Peculiar children are trying to save their ymbryne. Miss Peregrine is stuck as a bird since being captured and poisoned. The children have pulled all of their strength together and set off on a journey to find Miss Wren who is the last ymbryne left. When they find her loop she is not there and they have to search for more loops to find her. Along the way ,the children find even more peculiar children who join them to help.