An orphanage with children having peculiar powers is run by miss Peregrine, an ymbryne that can turn into human. Miss Peregrine and the children lives in a never-ending loop of the same day causing the children to never age.
We should fight!
The loop was changing, it was starting to move a fast pace. They realized that their ymbryne was being held captive and decides to save her. They escaped with an ymbryne.
They found out that Miss Peregrine, their ymbryne is injured and is stucked in her bird form. They were caught up in a storm and need to find land to take shelter, only to see that the monsters were following them.
THROUGHOUT EVERYTHING, IT WAS YOU WHO'S WITH US?!
We GOT THE WRONG YMBRYNE.
They hurry to a train only to be caught up in another fight with the wights. The children learns that only another ymbryne can turn her human again.
They were able to find Miss Wren, another ymbryne at a time loop set in England 1940. Miss Wren then starts transforming the peregrine fearing that if miss Peregrine will stay in her bird form for too long, she might lose her sanity.
Miss Wren was able to allow miss Peregrine change form, but everyone was shocked to find out that it is not miss Peregrine at all but her brother, Caul, who is also a wight. Caul then tells them that he was following them so that he can gain access to Miss Wren's menagerie.