Zeeland. Hitchhiking to a whirlpool

Max's father is a famous scientist who disappeared many years ago. And then one day Max decides to go in search of him, because living in a grandmother’s house in a sleepy town is unbearable. Max could not even imagine that the search in the company with a whispering girl named Emma would bring him to an amazing underwater world, a country called Zeoland, reliably hidden underground. Max discovers that here many people know his father and other people also disappear without a trace. What gloomy secret lies behind the beautiful facade of the sea country? And will Max and Emma have enough strength to get to the truth?