In 1966, when his father's attempted suicide causes the ostracism of the family in their small Montana community, fourteen-year-old Nate copes with his sadness and anger by trying to win the school science fair.
Thirteen-year-old Henry Wheeler struggles to be the man of his house and care for his reclusive mother Adele, all the while confronting the pangs of adolescence. Henry and his mother encounter Frank Chambers, an intimidating man clearly in need of help. Frank convinces them to take him into their home and later is revealed to be an escaped convict. The events of this long Labor Day weekend will shape them for the rest of their lives.