The Way Way Back
Shy 14-year-old Duncan goes on summer vacation with his mother, her overbearing boyfriend, and her boyfriend's daughter. Having a rough time fitting in, Duncan finds an unexpected friend in Owen, manager of the Water Wizz water park.
After the events at Lake Victoria, the prehistoric school of blood-thirsty piranhas make their way into swimming pools, plumbing, and a newly opened water park.
To celebrate their graduation, the teenagers from Valley Hills High School have organized an ’80s-themed party at the old Wet Valley water park. Things turn gruesome when it's revealed that a mysterious maniac has inserted giant razor blades into one of the water slides. The water park thus becomes the backdrop for a bloodbath (literally), and everyone is a suspect...