The students become ever more fearful of their futures , however , when the clone of John F. Kennedy is assassinated during his first presidential campaign in a manner similar to his original .
Students begin to seek out ways to alter students ' allegedly inevitable fates .
The students become ever more fearful of their futures , however , when the clone of John F. Kennedy is assassinated during his first presidential campaign in a manner similar to his original and they begin to seek out ways to alter their allegedly inevitable fates .