One

Ariana Grande, 9, and Frankie Grande, 17, are left alone by their parents. Neither of them know where their parents went or what they went to do. All they know is they have the whole house to themselves, and can do whatever they want. Ariana and Frankie invite friends over for a couple of days, but when things start going wrong in the house, they begin to doubt that they're alone. Read to find out what happens.