After their common babysitter cancels, the Thompson household turns to her pal, Anna to oversee their youngsters whereas the dad and mom exit to have fun their anniversary. At first Anna looks like a dream come true to the children, permitting them to eat additional cookies and play with issues which can be normally off-limits, however as her behaviour turns into more and more odd, the children quickly discover out that her intentions are darkish and twisted—and she or he shouldn't be who she appears to be.
