Injured in a fall whilst exploring the ruins of an old fortress, Molly needs to be rescued by her friends. The group of five then decide to adopt a pro-active stance relating to the local museum which is facing closure.

The gang uncovers a plot to steal a valuable icon.

The gang becomes lost in a labyrinth of underground caves.

After antiquities are stolen from the museum the gang sets a trap for the thieves.

The gang rescues a kidnapped archaeologist.

The museum officially closes as the children bid each other farewell.