Reeya Rai has joined her archaeologist parents on an excavation of an underground city in Turkey. There she learns the legend of an Indian inventor and his water clock cup. She also learns that Turkey is an earthquake hot spot. Worried that warning signals won’t make it to the archaeologists working in the underground city, Reeya builds a homemade seismograph. It's designed to indicate an oncoming earthquake for those working underground. Will Reeya’s invention keep her parents and others safe, and will they ever find the legendary cup?

Reeya Rai and her best friend Finlay are thrilled to learn about an emperor’s lost treasure during their archaeologist parents’ tour of Madagascar. Libertalia, a fabled lost pirate town believed to have been built in Madagascar, could be the treasure’s hiding spot. Before the group heads to explore a nature reserve in search of the pirate town, Reeya and friends create a spyglass to help direct their path. Will they find Libertalia? Will other treasure hunters beat them to it? Or is the whole thing just a legend?