Can the 3Ds find Darcy's great-grandmother's wedding ring before she has to confess to her mother, she lost it? It's up to the 3Ds to figure out where the old ring is and how to get it back. How far will the 3Ds go to save that ring? Darcy, Delilah, and DJ work together like clever sleuths determined to solve this mystery . . . before Mom finds out.