The students believe Tucker and Dale are deranged serial killers.
As the panicked students accidentally kill themselves through their own clumsiness and fear (e.g., diving into a woodchipper), Tucker and Dale conclude that the kids have entered a bizarre "suicide pact". Tucker and Dale vs Evil
The students' preppy leader, Chad (Jesse Moss), becomes increasingly unhinged, eventually turning into the film's true villain. Content and Tone Parents guide - Tucker and Dale vs Evil (2010) - IMDb The students believe Tucker and Dale are deranged
