Ten-year-old Moxy Maxwell has promised to write twelve thank-you notes by the day after Christmas so that she and her twin brother Mark can go to Hollywood to visit their father, but all her brilliant ideas to help finish the task more efficiently end up creating chaos in the house.

Ivy and Bean decide to be good, kind, and pure of thought in the hopes that the wild animals will befriend them, but when their plan doesn't work, they decide sometimes it's good to be a little bad.

Travis and his sister Corey decide to boost business at their grandmother's Vermont inn by staging a few "hauntings" that soon draw tourists from across the country, but when their antics awaken a dark force, they must find a way to put to rest the ghosts they have disturbed.