Despite Carrie's asthma, her parents present her brother Alex with a pet mouse, but the mouse has magic powers and creates havoc by summoning up the ghosts of all the animals that have ever lived in the house.
When a supernatural presence begins doing favors for Kelly and her younger sister Sasha, they realize that the ghost of their dead father has returned to watch over them.
Teenaged Wendy, who has the power to help souls cross over to their final destinations, falls in love with a ghost and discovers horrific, dark forces in the afterlife.
When fifteen-year-old Lexi's younger sister Kasey begins behaving strangely and their old Victorian house seems to take on a life of its own, Lexi investigates and discovers some frightening facts about previous occupants of the house, leading her to believe that many lives are in danger.
Logan returns as a ghost, complicating sixteen-year-old Aura's budding relationship with Zachary, especially when they discover that Logan might be able to become solid again.
As the only living resident of Arvale Manor, Silas must seek to understand the past and put an ancient wrong to right, as he discovers that even a house of ghosts can be haunted by its past.
