Anna spends every summer with her husband in a neighborhood a few dozen kilometers outside Prague. They've been together for ages, so their marriage, as is so often the case, has become routine and stereotyped. For a long time, the man has divided his time fairly between drinking with friends in the pub and making ship models of matches in bottles; His wife is virtually invisible to him. Anna spends several days each summer and enjoys regular meetings with her friends and colleagues who visit her in picturesque Central Bohemia on bike tours around Kamýk Castle.

Behind the closed doors of their room, two brothers share a secret of self-discovery. But when the elder Marek starts growing up, bringing his childish curiosity to an end, he realizes that they’ve crossed the boundaries of brotherly love – something that the younger David is still unable to understand...