17-year-old Zoe Hull uses her wits, survival skills, and compassion to fight for her life, and those of her fellow classmates, against a group of live-streaming school shooters.

A couple hires a live-in nanny to watch the offspring while they work. At first, everything goes perfectly, but when an unsafe incident means the parents no longer want the nanny around, they find out this nanny is savvy at not being evicted from her live-in situation. So savvy, in fact, that she can make these parents’ lives a true nightmare.