Lillian and Madison were unlikely, yet inseparable friends at their boarding school. Then Lillian had to leave the school unexpectedly in the wake of a scandal, and they have barely spoken since. Years later, Lillian gets a letter from Madison pleading for her help. Madison's twin stepkids are moving in, and she wants Lillian to be their caretaker. However, there's a catch: the twins spontaneously combust when they get agitated. Lillian is convinced...