![Cỗ máy chiến tranh](https://cdnwp.icu/wp-content/uploads/2023/12/co-may-chien-tranh-thumb-185x278.jpg)
After a hard day of volleyball at the beach, a teen whose parents are away decides to have a slumber party with her girlfriends. Their boyfriends predictably show up to scare them, but a stranger from the beach is also seen lurking around the house. Soon the group begins experiencing an attrition problem.