Two sisters are trapped under the fiberglass cover of an Olympic sized public pool and must brave the cold and each other to survive the harrowing night.
Did You Know?
Jonna is named as an homage to Jonah from the Old Testament a character who is trapped in the belly of a whale. See more
One of the sisters tried to pull the metal cover from the bottom of the pool. As she is pulling on the cover, she is also standing on top of it. See more