The story would have involved a possessed Jamie piloting the TARDIS to 1746 Scotland and his ancestral home, Castle McCrimmon, at some point after the Battle of Culloden, the aftermath of which was depicted in The Highlanders. There, he finds the current laird, Sir James McCrimmon, on his deathbed. Yeti appear and surround the castle where the local villagers fall under the influence of the Great Intelligence. The only person who seems to be immune is a girl named Fiona, with whom Jamie falls in love. The Great Intelligence wants to inhabit Jamie's body and become the laird once Sir James dies. However, the Intelligence is ultimately defeated by the Doctor. Jamie decides to leave the TARDIS and become the laird himself.