The success of the movie depends on Kaitlyn Dever's performance.

The protagonist, Brynn, battles extraterrestrial invaders.

Little conversation is used in the movie.

Brynn possesses an enigmatic secret.

Only at the very end is the secret made clear.

The aliens seem to have won the battle against Brynn.

The aliens search Brynn's memory bank.In her childhood, Brynn fatally injured another girl.

Fill inBrynn is given a second chance at life by the aliens. some text