When J.B. Cox offers Joe up to Gloria, he is hired to find the other two pieces of the Eye. Joe's lucky charm goes missing and Aunt Trudy uncovers the boys' investigation. Elsewhere, Fenton rescues Rupert Khan and learns what he and Laura were working on. Frank and Joe discover their mother's music box holds a secret.

The town of Bridgeport is put under curfew with Joe and Biff missing. Frank realizes they must have gone looking for the Chamber of the Eye. When Frank asks Gloria for help finding the Chamber, Gloria doesn't know anything about an entrance to the old, sealed, mine tunnels so Frank must turn to Stacy for help. Frank lets Officer Jesse Hooper in on their investigation, and the boys find themselves in more danger than they'd expected.