Teenager James Greville has lived in children s homes for nearly nine years: ever since his parents died when he was six years old. So it comes as a shock to find that a distant family member has traced him, and invited him to his home. So begins James trial two-week holiday at his Great Uncle s (George Cole) country manor: Greville Lodge. James spends most of his time alone exploring the sprawling Greville Lodge and soon discovers that the Lodge has many secrets, including doors to the west wing which have been sealed shut. Once night James wakes up to find himself in front of one of the doors and this time it opens! Through the doors, the mysteries of Greville Lodge are revealed.