Almostinbreadthanddepthofadocumentary,thismoviedepictsanautoraceduringthe70sontheworld'shardestendurancecourse:LeMansinFrance.Theracegoesover24hourson14.5kilometersofcordonedcountryroad.Everyfewhoursthetwodriverspercaralternate-butit'sstillachallengeforconcentrationandmaterial.InthefocusistheduelbetweentheGermanStahlerinFerrari512LMandtheAmericanDelaneyinGulfTeamPorsche917.Delaneyisunderextraordinarypressure,becausetheyearbeforehecausedasevereaccident,inwhichhisfriendLisa'shusbandwaskilled.