AcoupleofAustraliansintroducethreeAmericanbackpackerstothelocallegendofLemonTreePassagewhereaghostofamotorcyclistwarnsyoungdriverstoslowdown.Afterseeingtheghostfirsthandtheyuncoveramalevolentforcethatpossestheareaandthreatenstowreakhavoconthefinaldaysoftheirvacation.Isolatedandtenthousandmilesfromhome,thetouristsfindthemselvescaughtintheclutchesofanevilforcemuchmoreheinousthanthelocalmythbelieved.