The Ventura twins hunt for three sacred artifacts in a thrilling cross-island adventure that takes them from the ruins of a lighthouse to towering heights in a tropical rainforest.
Josie and Janelly join the twins on a trip to the Tibes Indigenous Ceremonial Center to complete the quest. Tensions rise when Janelly and the twins disagree about what to do after the artifact is freed from the stone.
El Yunque,1938: In the mountainous rainforest, the Ventura twins come across Gael, a Civilian Conservation Corps worker, who hides a metal container in the foundation of a future observation tower.
Josie, Alexa, and Beni head to the El Yunque National Rainforest to retrieve a metal container from the base of an observation tower...unaware that someone else is also searching for the artifact.
Lalo helps the Ventura twins locate the arrowhead before Kaylee returns. When an anomaly is triggered, Horacio, Alexa, and Beni find themselves in a murky place.