Aidan and Vicky Tudor are excited about the return of their mother and father, after three years of travelling abroad, to Victorian England; however, their carriage contains a surprise.

The Johnsons live in a country town; their dairy farm has been in the family for three generations, and although in recent years they have been struggling; one night there is a huge thunderstorm, and the son wakes to find a strange girl in his room.

In a small seaside village, Cindy and Jonathan are astonished when their fisherman father brings home a merman.

Fourteen-year-old Louise Adams has just moved to the old mining town of Cranford with her mother, and she hates it; she is determined not to make any effort in her new school or her new life.

Two hundred years after their deaths, Tobias and Samuel, who duelled for the affections of Ariadne are now cursed to relive the terrible events on the anniversary of their death.

In anticipation of the sale of the screen rights to his latest novel, a writer and his family purchased the Milton mansion; the children soon discover the mild-mannered spirit that is haunting the property.