A businessman discovers he has a hidden gene that enables him to breathe water, threatening the existence of the secret Aquarian race, in this charming, comedic fantasy drama from the Czech Republic.

Four old friends decide to shake up their unhappy, monotonous lives with a friendly bet and set off a series of unexpected events.

Four old friends decide to shake up their unhappy, monotonous lives with a friendly bet and set off a series of unexpected events.