Off the coast of Sicily, skilled diver Alice joins a team of explorers in search of the Sun Horse -- a decadent luxury yacht from the 1960s containing a priceless collection of art. But the young woman quickly discovers that it's more than a wreck. The Sun Horse has become a habitat, where deep sea creatures live in ambush. Predators resembling those from ancient legends shared by sailors around the world, yet very real creatures that sow terror and death to protect their territory.

Dive into Sonar for a thrilling experience like no other!