简介：　　Atthestartofhighschool,Piper,Sophie,IsabellaandHonorthinktheywillbebestfriendsforever,sotheysinkatimecapsuleinthelakewithalistofthingstheywanttodobeforegraduation.Bysenioryear,theyhavegonetheirseparateways.Piperhasturnedintotheclassclown,partygirlwhoneverpassesupadrink.Sophiepledgestostayavirginuntilsheismar...…