Ten-year-old Bree Thorne is unhappy to spend her summer vacation at the Lychhurst Hospital Daycare that her mother runs. Things get better when she befriends two more kids her age stuck in the same boat. And they get interesting when they hear the voice of a little boy talking to them from the inactive call button in the TV room.

As Bree and her friends communicate with the boy, they research the horrible history of the hospital wing before it became a daycare. When boy's tragic history is uncovered, the daycare kids must choose whether to set the ghost free, or leave him trapped in Limbo.