Returning from a polar relic hunt, Sydney's plane crash-lands on Nova Scotia due to a stowaway rival parachuting out with the prize. A group of nuns walking by rescues Sydney and takes her to the convent where her expertise is considered a sign: she's asked to search for a nun, Sister Evangeline, who went missing in the seventeenth century. She is presumed a martyr to French explorers who established the fort that later became the convent, which she allegedly still haunts. Nigel flies in to assist Sydney to examine the site, where a benefactor contractor executes repairs. A fire occurs, but the relic hunters persevere and confront the arsonists.
—KGF Vissers