Nancy launches a new investigation to find a group of missing bodies from Horseshoe Bay's cemetery that have been dug up and stolen - or have possibly risen. As Nancy is drawn into this ghostly case, a string of unexplained paranormal crimes leads the Drew Crew to believe that the literal sins of the town's past have returned to haunt the living. Meanwhile, Nancy struggles with yearning for Ace, the man she loves. But when a slow-burning attraction begins between Nancy and the son of Ryan Hudson's newest enemy, Nancy must decide whether this love interest is worth the ire of both her father and Ace - whose own heart may be tempted by a new relationship too.

Ace senses that Nancy is holding back and presses her to give him more information about the curse. Meanwhile, Bess is determined to prepare the perfect meal for Addy's parents, and Nick schedules a brunch date with someone new. Lastly, George's plan to let Judge Abbott know how grateful she is for the opportunity to be his clerk takes a shocking turn.

Nancy and the Drew Crew work together to identify a creature. Meanwhile, Bess reaches out to Carson after receiving a cease-and-desist letter. Lastly, Tristan ends up stealing Nancy's thunder during Career Day at the high school.

Carson and Ryan work together to help Nancy.

Nancy and the Drew Crew head out to the graveyard after she receives a mysterious call.

Nancy and the Drew Crew's mission to save Horseshoe Bay from sins of its past comes to an epic conclusion as they must contend with Nancy's most shocking discovery yet, one that will determine the fate of her star-crossed love with Ace.