Guilty over their older brother's drowning and their mother's subsequent breakdown, fourteen-year-old Vida ventures into the occult but it is ten-year-old Jess who meets the ghost who is trying to help them.
Remi Foster, born into a privileged Nigerian family, finds her life uprooted at age six when her father sends her to an exclusive boarding school in England.
On his thirteenth birthday, Jacob learns a secret about his birth and becomes involved in his father's work to protect other beings from the planet Ormingat who live on Earth.
Upon suddenly learning that her parents are researchers from another planet and they must leave in seven days or risk discovery, twelve-year-old Nesta decides to stay in their York, England, home, whether or not her parents go.
