For their honeymoon, newlyweds Cliff and Cydney travel to Hawaii. After making a travel video in the car, the two spend the night in a hotel before driving off in order to start hiking towards a remote beach. Whilst in the car, the two encounter fellow couple; kind-hearted Cleo who attempts to hitchhike with them and hot-headed Kale who takes Cleo away from the two. On the hike, they are befriended by tourist Nick and his girlfriend Gina. Nick and Gina accompany Cliff and Cydney in their journey, but tensions begin to arise in the group when a double homicide of an unidentified couple is reported in the area, with a man and woman being suspected as the killers. The two couples arrive at a waterfall where Kale and Cleo happen to be also, Kale makes vague threats to Cydney which seemingly worries Cliff. Nick also discovers that Cliff is a screenwriter and attempts to convince him to have a movie made of him - for he was a soldier and had his skull crushed in but survived thanks to an operation where metal plates were put in his head. Cliff lets Nick continue on about this throughout the journey despite not intending to make a movie on it. After moving on, the four go deeper into the jungle and become wary of each other due to the reported murders. The tensions, however, die down after the four witness Kale and Cleo being arrested for the murders after some teeth were found in Kale's backpack.