The miniseries set in the Adriatic Riviera and the coastal police background is a loose sequel of the successful Czech TV Prima series Under water (Pod hladinou). The co-production series was filmed at one of the most beautiful Croatian locations, the Brač island. The audience can look forward to scenes on the open sea and underwater shots, on which the crew worked with professional divers.

Honza Zach, chief police officer and a former diver, comes to Croatia to get closure on his past while helping his Czech colleagues during the summer season. Together with his assigned partner, young Ed, they solve everyday cases of Czech and Slovak tourists, related to the sea, cruises, land and marina, where strange thefts and other crimes occur.