When Lila moves into an old house on Maple Street, she starts to hear mysterious whispers and strange sounds. At first, the noises scare her, but she soon discovers they come from Adam, a kind ghost boy, and his playful ghost dog, Pac. As Lila gets to know them, she realizes they are friendly and lonely, trapped inside the house. Through courage and kindness, Lila forms an unexpected friendship and helps Adam to know what happen to him. They all go on a adventure to find out what happen!