Sentence 1: Hillary and her friends drove to the woods to go camping. 
 Sentence 3: It took them so long that night arrived quickly and it became dark 
 Sentence 4:  When it got dark, Hillary and her friends saw a bigfoot in the trees 
 Sentence 5:  They became so terrified that they abandoned camp and drove home 
 Given Sentence 2: After arriving to the campsite, they set up camp.