Tech billionaire Hiram Otis moves to Canterville Chase, where he and his family of five will not only have to deal with the locals' frosty reception and outdated customs, but also with a malevolent ghost haunting their new home.

The twins hunt Sir Simon, to lead them to the hidden treasure. Hiram accepts a challenge to a cricket game, naively thinking it can't be that different from baseball and Virginia discovers that the ghost was wrongfully punished.

Sir Simon is no longer the haunter but the hunted, as the twins devise a ghost trap to catch him. The family receives news that their treasure is lost, but Lucy is determined not to wallow and plans to host a Christmas Ball.

Virginia steps into the 4th dimension to defend Sir Simon in court, where his real crime is revealed, while the twins go through a secret tunnel underneath Canterville Chase. The adults team up to find them.