Two sisters are unwittingly 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
After the paramedics arrive and Bree is conscious again, you can see in a shot that all the blood surrounding the hole in the fiberglass where they escaped from is gone. See more